The 0xcert Framework is a JavaScript-based development platform which helps you quickly build and deploy decentralized applications (dApps). Using the framework you'll benefit from its opinionated design and the established conventions which come in handy when integrating with other dApps.
Protip: You can extend the frameworks functionality via plugins which are listed in the projects <a href="https://github.com/0xcert/framework/blob/master/README.md">README</a>.

0xcert Framework

Trail of Bits published a blog post outlining the 246 (common) findings they ran into while conducting Smart Contract audits.
The post itself is more focused on the macro of Smart Contract security and should be used to complement other, more technical resources.

Blog post 246 of the most common Smart Contract security issues found while conducting audits.

246 Findings From our Smart Contract Audits

This long-form article by BlockChannel is a great introduction into the world of Mechanism Design and Game Theory. It teaches the avid reader about different concepts and ideas on how to design an incentivized system around a token economy.
The discussed theories are applied by analyzing Namecoin and the challenges of the Ethereum Foundation to better understand the big ideas and further solidify the learnings.

Introduction to Mechanism Design and Game Theory.

A Crash Course in Mechanism Design for Cryptoeconomic Applications

Andreessen Horowitz (a.k.a "a16z") created the "Crypto Canon" project which is an exhaustive list of Blockchain and Crypto resources. It's structured in a way of increasing complexity, meaning that the first readings are about Blockchain and Crypto basics whereas the later resources discuss topics such as Decentralized Exchanges, Consensus mechanisms and Governance.
While it was originally published in 2018 it's updated regularly, so you might want to bookmark and revisit it from time to time.

a16z's list with Blockchain- and Crypto resources.

a16z Crypto Canon

The venture capital firm Andreessen Horowitz (know as "a16z") did a great job putting together a whole curriculum for aspiring Crypto startup founders called "Crypto Startup School".
In it you'll learn everything you need to know to build, launch and grow your own Blockchain- and Crypto startups.
In conjunction to that they also published an article called "<a href="https://a16z.com/2020/12/28/crypto-users-guide/">The State of Crypto</a>" which acts as a kind of TL;DR version of the Crypto Startup School content.

a16z's school that teaches you how to build and launch your own Blockchain startup.

a16z Crypto Startup School

Alchemy is a Blockchain developer platform with a variety of different products to streamline the whole dApp lifecycle. From local development to running it in production.
Their <a href="https://www.alchemy.com/supernode">Supernode API</a> offering provides developers reliable access to the Ethereum Blockchain Network. Other solutions revolve around notifications as well as remote monitoring and debugging.
While paid plans are an option they also offer a generous free plan which should be more than enough to get you started.

Alchemy

The "All About Solidity" Blog Post Series is a collection of in-depth blog posts on various aspects of Solidity and the Ethereum Virtual Machine (EVM). Reading through it you'll learn everything there is to know about addresses, assembly, comments, contracts, functions, libraries and more.
Protip: Browse through the corresponding <a href="https://github.com/CJ42/All-About-Solidity">GitHub repository</a> to find more writeups which haven't been published yet.

A Blog Post Series to help Smart Contract Developers build better dApps.

All About Solidity

The "Audit Techniques &#x26; Tools 101" post by Secureum describes how Smart Contracts and dApps are audited and which tools and techniques are used in the process.
Reading through it you'll learn what you should do to prepare for an audit, how an audit is conducted, what results to expect form audits and more.

Key facts and discussion about the Smart Contract auditing process.

Audit Techniques & Tools 101

If you're into the DeFi and Open Finance movement there's no way around the Bankless Podcast. Subscribing to it you'll be kept you to date with all the important developments in the DeFi space.
The also have a <a href="https://www.youtube.com/c/Bankless/">YouTube Channel</a> where you can use the "Playlists" feature to filter the content by category such as Tutorials, AMAs or "Weekly Rollups".
Protip: The team at Bankless created "<a href="https://newsletter.banklesshq.com/p/-guide-1-starting-with-bankless">Going Bankless: The Ultimate Guide</a>", a great resources to onboard you into the world of Decentralized Finance. Reading through it you'll learn about all the important concepts and projects used in the DeFi ecosystem. No prior knowledge required. At the end of every section there are links to even more in-depth Blog Posts, Newsletters, Podcasts and YouTube videos you can dive into to learn even more.

Podcast and Newsletter about Decentralized Finance (DeFi) and living a Bankless life.

Bankless

Yos Riady's Blog Post on Smart Contract development best practices is a stellar mini tutorial series which outlines how you can setup a professional development environment to streamline your dApp workflows.
Working through his list you'll learn about static analysis, linters, runbooks, the usage of public testnets as well as best practices for building solid frontends and backends.

Learn Smart Contract development best practices with the help of this mini-tutorial series.

Best Practices for Smart Contract Development

Binance Academy is a great place to educate yourself on various Blockchain and crypto-related technologies. While some of their guides are definitely written for Blockchain beginners, there's a treasure trove of well researched material for the more technical inclined readers.
Protip: Use the filters at the top of the <a href="https://academy.binance.com/en/articles">articles view</a> to find the content you're interested in.
The folks at Binance Academy regularly add new content so it's definitely worthwhile to check back every now and then.

Binance's resource hub to learn all things crypto.

Binance Academy

Did you every attempt to read a Blockchain or Crypto whitepaper but got stuck halfway through? Are you looking for an easy to digest format for advanced Blockchain and Crypto topics such as "Layer 2 Scaling"? Chances are that the folks at "Blockchain at Berkeley" already covered and discussed this topic on the YouTube channel.

University courses and Whitepaper deep dives into Blockchain- and Crypto topics.

Blockchain at Berkeley

The Blockchain Demo project by Sean Han is an interactive website which teaches you how a Blockchain works in an intuitive, bite-sized fashion.
Working through the tutorial you start with the genesis block to which you slowly add more data and hence blocks to the Blockchain. You'll explore why the chain forms a tamper-proof ledger, how a Peer-to-Peer network is formed to exchange blocks and how consensus is reached within such network based on protocols like Proof-of-Work.
With every step of the way you can look into the code underlying the implementation. The full <a href="https://github.com/seanjameshan/blockchain">source code</a> can be found at GitHub.
There's also another, interactive <a href="https://andersbrownworth.com/blockchain/">Blockchain tutorial</a> by Anders Brownworth you might want to look into as well. The implementation of such project is also <a href="https://github.com/anders94/blockchain-demo">available at GitHub</a>.

Interactive Blockchain explainer and demo.

Blockchain Demo

Browse through Web3- and Blockchain Job Boards, prepare for your interview and land your dream job in Crypto.

Find the best Web3- and Blockchain jobs to work in Crypto.

Blockchain Developer Jobs

Find the best Blockchain development libraries and tools that will supercharge your dApp development journey.

Browse through the list of the best Blockchain development libraries and tools.

Blockchain Development Tools

<h2>Getting Started</h2>
<h3>0. Learn JavaScript Basics (Optional)</h3>
A typical dApp is a combination of a Frontend (what the user sees and interacts with) and a Backend (usually your Smart Contracts deployed on the Ethereum Blockchain).
Given that Frontends as well as the vast majority of Ethereum's Smart Contract development tooling is written in JavaScript it's a worthwhile endeavour to brush up your JavaScript skills before diving deeper into Solidity and dApp development. If you're new to JavaScript or need a quick refresher you'll find a good resource in the <a href="https://www.codecademy.com/learn/introduction-to-javascript">Learn JavaScript</a> course by Codecademy.
Protip: Don't spend too much time on intermediate and advanced topics. Knowing the basics of JavaScript should be more than enough to get you going.
<h3>1. Work through CryptoZombies</h3>
The best way to learn something new is through a structured curriculum which walks you through the big ideas and major concepts in a guided fashion. Ideally as frictionless as possible.
<a href="https://cryptozombies.io/">CryptoZombies</a> is one of the best resources for every aspiring Ethereum dApp / Solidity developer. In it you'll build your own NFT-style Zombie game and learn all the important concepts of EVM development and the Solidity programming language. The best part is that it's completely browser based, so you don't need to install and configure anything.
While you can work through the whole course we'd advice to focus on the first 2 sections about Solidity Smart Contract development.
If you're interested in writing Smart Contracts with Vyper you should check out <a href="https://vyper.fun/">Vyper.fun</a> which is another great interactive resource focused on the Vyper programming language.
<h3>2. Learn about Truffle Suite / Hardhat</h3>
While you can install and setup all the different toolings such as a Solidity / Vyper compiler from scratch doesn't mean you should.
Luckily enough others jumped in and built whole developer tool suites such as the <a href="https://www.trufflesuite.com/">Truffle Suite</a> or <a href="https://hardhat.org/">Hardhat</a>. Take some time to browse through both projects and play around with their solutions.
Once you're familiar with both, pick your favorite development stack and stick with it (at least for the time being). For beginners Truffle is usually the best choice as it comes with "batteries included". Intermediate / Advanced users will find more flexibility in Hardhat.
<h3>3. Build your first dApp</h3>
Given that you're now familiar with some basic Solidity / Vyper and the developer toolings in the Ethereum dApp space it's time to work on your first "real" project.
If you're already familiar with Software- and JavaScript development in general you might want to jump straight into your own first project without any further guidance.
For others, it might be worthwhile to follow an online tutorial like <a href="https://www.dappuniversity.com/articles/the-ultimate-ethereum-dapp-tutorial">this one</a> from "Dapp University".
It isn't super important what you're building as long as you focus your efforts on writing code, rather than consuming more blog posts and YouTube videos.
<h3>4. Build more dApps</h3>
Once done with your very first dApp, you surely ran into various roadblocks you didn't anticipate beforehand. While having guardrails in the beginning is a necessity, it's being on your own where true growth happens and the learnings materialize.
Given that, you should spend some more time building dApps end-to-end. This time around without any guardrails. Start with a clean slate and work your way through the whole process. Start with the Smart Contract logic, connect it to a frontend and ensure that everything works by writing unit- and integration tests.
It's absolutely ok to check references and existing code to get you unstuck but focus on trying to solve the problem on your own before consulting other resources.
"What should I build?". That's a common and valid question given that we should be focusing on deliberate practice rather than rote repetition. The following is a list of dApp ideas you can draw from (ordered by difficulty: Easy - Hard):
<h4>Voting (Easy)</h4>
A voting dApp where users can vote for candidates. Every user should only be able to vote once.
<h4>CRUD (Easy)</h4>
A CRUD (Create, Read, Update, Delete) dApp where users can create posts, read posts, update existing posts and remove posts. You should track the ownership of posts such that only owners can update and remove posts.
<h4>Escrow (Medium)</h4>
Write an escrow Smart Contract which helps users facilitate transactions. User A should be able to deposit funds in the Smart Contract while user B should be able to withdraw the previously deposited funds from user A.
You can add a timelock-like feature where funds will be automatically sent back to the depositor after a certain number of blocks has been mined and the funds haven't been withdrawn by user B.
<h4>Lottery (Medium)</h4>
Create a Lottery dApp where users can buy tickets to participate. The money they spent on the tickets is added to a pool. After a pre-defined number of blocks has been mined, a winner is chosen randomly who receives all the funds from the pool.
Note: You can use a simple random number generation schemes derived from block hashes. There's no need to integrate a VRF via an Oracle (although you might want to try that as well).
<h4>Multi-Sig Wallet (Hard)</h4>
Implement a Multi-Sig Wallet where multiple signatures are necessary to create a transaction and spend coins.
<h4>Payment Channel (Hard)</h4>
Implement a payment channel which coordinates transactions between user A and user B off-chain and settles them on-chain. To keep it simple you can start with a Uni-directional Payment Channel and extend it later on to be Bi-directional.
<h4>Flash Loans (Hard)</h4>
Implement a Flash Loan strategy in which you borrow funds, exploit an arbitrage opportunity and repay the borrowed funds while pocketing the difference, all within one transactions.
To help you get started with this one you might want to read how Flash Loans work by reading through the <a href="https://money-legos.studydefi.com/">Money Legos</a> project documentation for the <a href="https://money-legos.studydefi.com/#/aave?id=flashloans">Aave</a> and <a href="https://money-legos.studydefi.com/#/dydx?id=flashloans-on-dydx">dYdX</a> DeFi protocols.
Also learn about "Mainnet Forking" capabilities of Ganache CLI and Hardhat Network. That way you don't need to continually re-deploy your Smart Contract on a testnet.
Protip: It's more than enough to build 2-3 dApps end-to-end. Move on to the next step the minute "everything clicks".
<h3>5. Learn to use OpenZeppelin's Smart Contracts</h3>
Writing secure Solidity / Vyper code can be a tough endeavour. Luckily the folks at OpenZeppelin created and maintain a <a href="https://github.com/OpenZeppelin/openzeppelin-contracts">GitHub repository</a> with audited Smart Contract building blocks you can incorporate in your projects.
The full documentation for all the different Smart Contracts can be found <a href="https://docs.openzeppelin.com/contracts">here</a>.
<h3>6. Get to know ERC standards</h3>
<a href="https://eips.ethereum.org/erc">ERC's</a> are Ethereum Improvement Proposals in which different ideas to improve the Ethereum Blockchain are discussed. One of the most famous ERC's are ERC-20 and ERC-721, both of which describe Token standards.
Read through the ERC-20 and ERC-721 standards and build a dApp which leverages those.
Protip: OpenZeppelin's Smart Contracts package should help you in doing so.
<h3>7. Learn about Smart Contract security</h3>
We already touched on the importance of Smart Contract security when it comes to dApp and Blockchain development. Take some time to read through our <a href="https://wiki.cryptodevhub.io/ethereum-evm/security">Security</a> page and learn more about recent hacks and potential pitfalls.
<h3>8. Join Communities</h3>
Learning never stops and is best nurtured via thoughtful discussions and working with others. Our <a href="https://wiki.cryptodevhub.io/ethereum-evm/communities">Communities</a> page will show you all the Ethereum communities you might want to join.
You should also consider contributing back to your favorite Open Source projects (or start your own). Not only do you provide immediate value, working on Open Source is one of the best ways to solidify your knowledge and grow as an engineer.
<h3>Bonus: Streamline your DX</h3>
While Truffle and Hardhat help you getting up to speed there's more tooling you can leverage to streamline your overall workflow and Developer Experience.
Yos Riady's article "<a href="https://yos.io/2019/11/10/smart-contract-development-best-practices/">Best Practices for Smart Contract Development</a>" is a treasure trove of great advice on how to setup a professional development environment.
In addition to that you should also check out Paul Berg's <a href="https://github.com/PaulRBerg/create-eth-app">create-eth-app</a> or Austin Griffith's <a href="https://github.com/austintgriffith/scaffold-eth">scaffold-eth</a> projects which will help you getting started even faster.
You can find a more thorough list of useful tools on our <a href="https://wiki.cryptodevhub.io/ethereum-evm/tools">Tools</a> page.

Learn Solidity and Smart Contract development to build dApps on Ethereum-Virtual-Machine (EVM) based chains.

Blockchain Development Tutorial

The "Blockchain Graveyard" project consolidates and categorizes various Blockchain and Cryptocurrency exploits found in the wild.
Every report consists of a short description of the root cause as well as optional links to block explorers and accompanying resources.
Protip: The homepage features a graphic with root cause estimates which shows what kind of vulnerabilities were used most during exploitations.

Consolidation of Blockchain- and Cryptocurrency exploits found in the wild.

Blockchain Graveyard

Stay up-to-date with the ever-changing Crypto landscape by following these Media Outlet.

The best Blockchain- and Crypto Media Outlets to follow.

Blockchain Media

The "Blockchain Security Database" by ConsenSys Diligence is an Open Source database which catalogs security information for popular dApp projects and their underlying Smart Contracts.
Browsing through it you'll find a project's audits as well as bug bounty payouts one receives when finding new security vulnerabilities.

Database that organizes security information for dApps and Smart Contracts.

Blockchain Security Database

"Blocktribe" is a Blockchain and Cryptocurrency job search engine with a constantly updated index of job opportunities in the space.
Make sure to use their "Companies" page to find out what jobs are currently being offered by your company of choice.

Blockchain and Cryptocurrency job search engine.

Blocktribe

"BoringSolidity" is a collection of Solidity Smart Contracts optimized for gas savings, code readability and security.
Using it you get access to a gas optimized version of an ERC-20 implementation, a utility to claim and track ownership, a functionality to call multiple contract functions in a batch as well as other useful helpers.

Collection of Solidity Smart Contracts optimized for gas savings and security.

Boring Solidity

Brownie is a development and testing framework for Smart Contracts targeting the Ethereum Virtual Machine. It has full support for languages like Solidity and Vyper, powerful debugging tools as well as a package manager.
Protip: Brownie also ships with a built-in console you can use to quickly interact with and iterate on your project.

Development and testing framework for Smart Contracts targeting the Ethereum Virtual Machine (EVM).

Brownie

This blog post written by Nader Dabit teaches you everything you need to know to build and launch your own EVM-based NFT Marketplace.
Working through it you'll use technologies like Next.js, Tailwind CSS, Solidity, Hardhat, Ethers.js and IPFS to create your own ERC-721 Smart Contract, publish the NFT to IPFS and display it via a frontend written in React.
The codebase for the project can be found on <a href="https://github.com/dabit3/polygon-ethereum-nextjs-marketplace/">GitHub</a>. If you're a visual learner you can check out the accompanying <a href="https://www.youtube.com/watch?v=GKJBEEXUha0">YouTube video</a>.

Learn how to build your own NFT Marketplace from scratch.

Building a Full Stack NFT Marketplace

The "Building Secure Smart Contracts" tutorial by Trail of Bits is one of the best resources to learn about Smart Contract development best practices and toolings in a hands-on fashion.
While working through it you'll learn how to setup a secure Smart Contract development workflow, ways to securely integrate tokens into your dApp and which tools you should use to statically analyze your code for potential bugs and undesired side-effects.

This Tutorial by Trail of Bits teaches you everything you need to know about Smart Contract security.

Building Secure Smart Contracts

Buildspace is an effort to teach you fundamental Blockchain- and Web3 concepts through project-based learning.
Once joined you'll have access to courses that'll show you how to build EVM-based dApps with Solidity, generate an NFT art collection or implement a Blockchain game based on L2 networks.

Online courses to learn about Blockchain- and Web3 Technologies.

Buildspace

The "cadCAD" project is an Open Source tool that helps you design, simulate, validate and operate complex systems. Using cadCAD one can find answers to the "what if?" questions that arise when exploring the design space of such systems.
Protip: Watch the official <a href="https://www.youtube.com/playlist?list=PLmWm8ksQq4YKtdRV-SoinhV6LbQMgX1we">tutorials on YouTube</a> to learn how you can use cadCAD in your projects.

Design, test and validate complex systems through simulation.

cadCAD

The "Capture the Ether" project is an interactive game in which you hack Smart Contracts to learn about security.
The different categories you work through will educate you about important topics such as integer overflows and underflows or ownership rules. Every challenge has points attached to it. The more points you get, the harder the challenge.

Wargame in which you hack Ethereum Smart Contracts to learn about security best practices.

Capture the Ether

The "Chainlist" website is a collection of EVM network configurations necessary to connect wallets like MetaMask to EVM-compatible Blockchains.
Using Chainlist you can help your users during the onboarding process if you dApps and Smart Contracts are deployed on Blockchains the user's wallet hasn't configured already.

List with various Ethereum Virtual Machine (EVM) based networks and their configuration.

Chainlist

The "Cipher Shastra" project is an effort to help you sharpen your security skills by solving CTF-like challenges from the fields of Blockchain Security, Smart Contract Exploitation and Cryptography.
Protip: Some of the challenges have writeups listed at the bottom of the page you can use if you ever get stuck.

CTF challenges to learn about Smart Contract security.

Cipher Shastra

The "Clean Contracts" blog post by Wesley van Heije is a long-form articles which walks you through everything you need to know to write maintainable, secure and gas optimized Smart Contracts.
Protip: Also make sure to check out the accompanying <a href="https://github.com/wslyvh/clean-contracts">GitHub Repository</a> which has supporting code examples.

Learn how to write maintainable Smart Contracts.

Clean Contracts

Using cliquebait you can spin up an easy to use single-node Proof-of-Authority Blockchain via Geth running in Docker. Cliquebait also automatically generates accounts with ETH you can unlock to easily deploy and test your Smart Contracts.
Cliquebait's main goals is to simplify integration- and acceptance testing of dApps by offering an ephemeral testing environment that closely resembles a real Blockchain network.

Docker container that spins up a PoA Blockchain for testing.

Cliquebait

Cloudflare's hosted Ethereum Gateway is a signup- and cost free option to connect to the Ethereum Blockchain Network without the need to run an Ethereum Node yourself.
All you need to do is grab their JSON-RPC URL <code>https://cloudflare-eth.com</code> and use it to establish a connection with your Web 3 client of choice (e.g. web3.js or ethers).

Hosted RPC Nodes for Ethereum Virtual Machine (EVM) based Blockchains.

Cloudflare Ethereum Gateway

The folks at CoinFund wrote a 3 part series on Cryptoeconomics which teaches the reader everything there is to know about the economics behind Blockchain-based systems.
Reading through it you'll learn about cryptoasset valuations, the pricing principles of cryptocurrencies and the Tokenomics of Blockchains such as Bitcoin or Ethereum.
<ul>
<li><a href="https://blog.coinfund.io/cryptoeconomics-is-hard-ad401b2428b9">Part 1 - Cryptoeconomics Is Hard</a></li>
<li><a href="https://blog.coinfund.io/cryptoeconomics-is-hard-part-2-4d522cb3d3a4">Part 2 - Cryptoeconomics is hard, part 2</a></li>
<li><a href="https://blog.coinfund.io/cryptoeconomics-is-hard-market-cap-4833c378a3e0">Part 3 - Cryptoeconomics is hard: Market Cap</a></li>
</ul>

Blog Post series about Cryptoeconomics of Blockchains such as Bitcoin and Ethereum.

CoinFund - Cryptoeconomics is Hard Series

CoinMarketCap Alexandria is a great place to learn about Cryptocurrency and its underlying technologies.
You definitely don't want to miss the <a href="https://coinmarketcap.com/alexandria/categories/tech-deep-dives">Tech Deep Dives</a> series.
The team at CoinMarketCap adds new content on a regular basis so be sure to visit their website on a regular basis.

CoinMarketCap's resource hub to learn all things crypto.

CoinMarketCap Alexandria

If you're looking for a concise overview of common Smart Contract vulnerabilities you should read through Yos Riady's writeup on his blog.
In it, Yos walks you through the basics of Smart Contract security as well as common vulnerabilities such as the infamous reentrancy bug, bad randomness or integer overflows. Not only do you learn about the theoretical underpinnings of such exploits, you'll also see buggy code examples as well as the fixes necessary to mitigate attacks.

Blog post with an overview of common Smart Contract vulnerabilities.

Common Smart Contract Vulnerabilities and How To Mitigate Them

The "Code with Us" online series is an interactive workshop program designed to teach the Cosmos SDK via live coding sessions. While some of the videos will work through the official Cosmos SDK Tutorials you'll also learn how to write Smart Contracts in CosmWASM or setup your own Cosmos validator node.

Online series about the Cosmos ecosystem with interactive workshops and live coding sessions.

Cosmos - Code With Us

The team at Cosmos put together a series of different hands-on tutorials which will help you understand the inner-workings of the Cosmos SDK and Tendermint Core.
The <a href="https://tutorials.cosmos.network/academy/0-welcome/">Cosmos Academy</a> is a developer-focused course which covers everything one needs to know about Cosmos and its ecosystem.
Protip: Before working through any of the tutorials you might want to watch the 45 minutes introductory talk "<a href="https://www.youtube.com/watch?v=pyAmxlzVdqM">How to Build a Blockchain App with Cosmos SDK</a>" by Jack Zampolin. This will help you understand the big picture and flow of information in a Cosmos-powered Blockchain.

Official list of Cosmos tutorials and guides.

Cosmos Developer Portal

Read through the official Cosmos introduction to learn how Cosmos and Tendermint work. Once done you should have a good understanding how Cosmos compares to other Blockchain Platforms and why the "Internet of Blockchains" is such an important topic.

Cosmos Intro

"CosmWasm" is a Smart Contract platform for the Cosmos ecosystem. Thanks to its seamless integration with the Cosmos SDK, developers can add Smart Contract support to their chains without modifying existing logic.

Smart Contract Platform for the Cosmos ecosystem based on WebAssembly.

CosmWasm

The create-eth-app project helps you get up to speed faster by adding a scaffolding command to your CLI.
By running one command you'll create an opinionated project structure with example code for your dApp's frontend and backend. Make sure to read through the projects README to learn all the different options and configurations you use to customize the app creation process further.

Template to aid the development of Ethereum Virtual Machine (EVM) dApps.

Create Eth App

create-react-native-dapp is an npx utility which helps you bootstrap React Native mobile applications that interface with the Ethereum Blockchain.
The tight integration with projects such as Expo, Hardhat, WalletConnect and Prettier ensures a great developer experience so you can focus on your Smartphone dApp's features rather than tooling.

Quickly bootstrap React Native dApps that integrate with Ethereum Virtual Machine (EVM) Blockchains.

Create React Native dApp

The "CryptoJobList" is one of the web's largest aggregator for Cryptocurrency and Blockchain jobs. Make sure to use their predefined categories like "DeFi" or "NFT" in combination with filters to further narrow down your search.
Other than job postings you can also find realtime data and statistics on the Blockchain industry as well as a very useful overview of salaries which will help you benchmark your compensation against others.

Job board with Cryptocurrency, Blockchain and Web3 jobs.

CryptoJobList

The "CryptoJobs" job aggregator is an easy to browse job search engine which lists job opportunities from various companies working in the Blockchain space.
You can subscribe to their Newsletter to receive weekly updates about the job market straight to your inbox.
Protip: Use the toggle next to the search box to switch from "All jobs" to "Remote" to search specifically for remote jobs.

Aggregator and search engine for Blockchain- and Web3 jobs.

CryptoJobs

"Crypto Jobs &#x26; Careers" is a job aggregator that lists employment opportunities in various sectors within the Blockchain- and Crypto space. Using it you can find jobs in Engineering, Human Resources, Community Management, Business Development and more.
Protip: Use the advanced search to further narrow down your search results.

Job aggregator which lists Blockchain- and Crypto jobs in various sectors.

Crypto Jobs & Careers

"Cryptocurrency Jobs" is a curated job board for opportunities in the Blockchain and Cryptocurrency space. It offers various filters as well as alerts to help you find the Blockchain job you're looking for.
While browsing, take note of the "Blockchain jobs you might like" section on the right hand side of a job postings detail view which aggregates similar jobs to the one you're currently looking at.

Curated job board for opportunities in the Blockchain and Crypto space.

Cryptocurrency Jobs

Shameless plug: We have our very own CryptoDevHub Discord server! Join us to discuss everything related to Blockchains, DLT, sharding, consensus algorithms and more.
You'll also find channels to get dev support, showcase your project or find fellows to team up for Hackathons and startups.

Community for developers working in the Web3-, Blockchain- and Crypto space.

CryptoDevHub Discord

The CryptoDevs Discord server was created by the /r/CryptoTechnology community to discuss and chat about recent developments in a more real time environment. It's a great place to find fellow developers passionate about Web 3, Solidity and Crypto tech in general.

Community for developers interested in Blockchain- and Crypto development.

CryptoDevs Discord

Cryptoeconomics.Study is a free, Open Source course which teaches you the fundamentals of Blockchain protocols and their underlying Token Economics.
Working through it you'll not only learn how Blockchains such as Bitcoin and Ethereum work, you'll also get introduced to the game theoretic aspects which will help you understand why consensus mechanisms such as Proof-of-Work (PoW) and Proof-of-Stake (PoS) can be used to secure the network.

Free, Open Source course about Token Economics and Mechanism Design.

Cryptoeconomics.Study

The /r/CryptoTechnology subreddit is a great place for serious discussions about Blockchain- and Crypto technologies. It's actively moderated and discourages shameless self-promotion and shilling. Reading through it you'll learn about the most recent developments in the Blockchain and DLT space.

Reddit Community for everyone interested in Blockchain- and Crypto technologies.

CryptoTechnology Subreddit

In "CryptoZombies" you'll learn Solidity, one of EVMs programming languages by building an NFT game in which you create, train and grow an army of Zombies.
Given its playful nature it's one of the best best introductions to the EVM and Solidity. While definitely interesting you might want to focus on the first two mini-courses and skip the "Beyond Ethereum" one when starting out.

Learn Solidity and dApp development by building a Zombie game.

CryptoZombies

During the "DeFi Summer of 2020" there was a period of time where new Smart Contract exploits were reported on an almost daily basis.
If you want to learn how the infamous DeFi hacks worked and how you can take out a Flash Loan to manipulate Oracle price feeds you should definitely check out "Damn Vulnerable DeFi".
Protip: If you get stuck, not making any significant progress you should check out the <a href="https://forum.openzeppelin.com/">OpenZeppelin Forum</a> where community members share and discuss their solutions.

Wargame to learn how infamous DeFi hacks were conducted.

Damn Vulnerable DeFi

The "DappUniversity" YouTube Channel is a great place to find useful video tutorials for full-stack dApp development on Ethereum. Simply click on the "Playlists" tab to find curated lists with videos on topics such Solidity, Web3.js, Ethereum + React and more.
Protip: When sorting the videos by duration you'll find a bunch of long-form videos (some of which are ~8 hours long!) which will walk you through the whole dApp development life cycle end-to-end. Also keep an eye on the video descriptions which usually include links to the project's GitHub repository.

Tutorials, guides and courses to master Blockchain development.

DappUniversity

DappTools is a suite of Ethereum focused CLI Tools and Frameworks for dApp development on Ethereum and EVM-based Blockchains. It ships with everything important to get from idea to deployment on mainnet smoothly. Dapp is designed in an opinionated way to make onboarding and usage fast, robust and enjoyable.
Protip 1: There are a bunch of premade DappSys Components (see "Smart Contracts" section <a href="http://dapp.tools/">here</a>) you can add to your Dapp project to iterate even faster.
Protip 2: When you're using Dapp you might also want to join the <a href="https://dapphub.chat/">DappHub Chat</a>, a self-organizing group of likeminded people who work with and on Dapp and Blockchain development in general.

Suite of Ethereum focused CLI Tools and Frameworks.

Dapp Tools

The Decentralized Finance MOOC is an online course that teaches you everything you need to know about DeFi from an economics as well as computer science point of view. The curriculum includes topics such as Blockchain technology, Stablecoins, Decentralized Exchanges (DEXs), Lending &#x26; Borrowing, Oracles, Privacy and more.
Protip: Ensure that you take the quizzes and attend the labs to get the most out of this course.

Free online course on Decentralized Finance (DeFi).

Decentralized Finance MOOC

Watching DeFi Dad's videos on his YouTube Channel gives you the opportunity to peek over ones shoulder to see how DeFi products and protocols are used by end users. His Tutorial-style videos cover a wide range of topics with a focus on the Ethereum ecosystem.

Educational videos and tutorials about Decentralized Finance (DeFi).

DeFi Dad

DeFi Hack is a CTF / Wargame focused on popular DeFi exploits and vulnerabilities. It's based on The Etherneut wargame by the OpenZeppelin team.

CTF / Wargame focused on popular DeFi Exploits and Vulnerabilities.

DeFi Hack

"DeFi Jobs" is a job board that aggregates employment opportunities in the Decentralized Finance (DeFi) space. Browsing through it you'll find jobs in Engineering, Design, Marketing, HR and more.
Protip: Follow the official <a href="https://twitter.com/defijobs">Twitter Account</a> or subscribe to their Newsletter to get notified about new job listings.

Job board focused on the Decentralized Finance (DeFi) space.

DeFi Jobs

DeFi Llama is a DeFi Dashboard which aggregates Blockchain- and DeFi Protocol data like TVL (Total Value Locked), Market Cap, Changes in percentage and more.
The leaderboard on the homepage summarizes the current state of DeFi Protocol usage across various Blockchains and Layer 2 Rollups.
Protip: Use the navigation on the left to find data on specific DeFi categories.

Dashboard with important DeFi project metrics.

DeFi Llama

Navigating the DeFi space is hard. The "DeFi-Map" project's goal is to catalog all DeFi projects in an easy to digest way.
Their repository consolidates all the important project information such as links to Whitepapers, Documentation, Source Code and Smart Contract addresses.

List of Decentralized Finance (DeFi) projects deployed on Ethereum.

DeFi Map

The <a href="https://github.com/gauss314/defi">DeFi Open Source Tools</a> project provides a tool suite written in Python which lets you calculate impermanent loss, evaluate staking- and farming strategies as well as query crypto APIs like CoinGecko for historical data.

Tools to use for Decentralized Finance (DeFi) applications.

DeFi Open Source Tools

DeFi Prime is a news portal, discussion forum and content aggregator for all things DeFi and Open Finance. Their "Projects" site and its categories helps you navigate the DeFi ecosystem on chains such as Ethereum, Binance Smart Chain or Tron.
Also make sure to check out their community forum "Alpha DeFi" to find like minded DeFi users and thoughtful conversations about the latest projects, Yield Farming and more.

DeFi Prime

DeFi Pulse is the trusted go-to source for DeFi data on project usage and (TVL) Total Value Locked. Their homepage has a leaderboard with the most actively used DeFi protocols spanning various categories and Blockchains.
You might also enjoy browsing through "The DeFi List" which explains and categorizes all the DeFi projects and protocols you need to know about.

DeFi Pulse

DeFi Rate is a news portal and educational resource with the goal to demystify and introduce non-technical users to the world of Open- and Decentralized Finance.
Definitely check out their extensive reviews as well as their "This Week in DeFi" Newsletter which is a great way to stay up to date with the growing space.

DeFi Rate

Interacting with various DeFi projects and protocols comes with some risks as "you are your own bank" and therefore solely responsible for the actions you take. While major DeFi projects are usually audited by expert firms like OpenZeppelin, others lack basic security checks and might expose you to severe Smart Contract bugs and common DeFi risks.
The DeFi Safety project was started to address such issues. Visiting the project's page you'll get access to a variety of project reviews which are split up into sections such as "Code and Team", "Documentation" or "Testing" and result in an overall score from 0 - 100%.
Protip: You can also request reviews if a project you're interested in is missing in their list. Simply click on the "Request Reviews" link in the top navigation.

DeFi Protocol ratings and security reviews.

DeFi Safety

The goal of the "DeFi Threat Matrix" project is to consolidate all known attack vectors for DeFi focused dApps in one place.
Browsing through the GitHub repository you'll learn about potential vulnerabilities in Protocols, Blockchains as well as Token Economics / Mechanism Design. The repository also includes resources and pointers to in-depth guides which will help you understand and mitigate such attacks.

Knowledge Base of adversary tactics and techniques based on real-world observations on DeFi.

DeFi Threat Matrix

The team at DeFi Yield maintains two separate databases focused on <a href="https://defiyield.app/audit-database">audits</a> and <a href="https://defiyield.app/rekt-database">hacks</a>.
Both database explorers allow you to search for projects and filter down results by chains, auditors, types, etc.

DeFi Yield Databases

The "Dragonfly Capital Job Board" lets you explore jobs from Dragonfly Capital's portfolio companies.
One can search for jobs via keywords or use filters to narrow down results by company, team size, token / equity compensation, technical focus, location and more.

Dragonfly Capital Jobs

The "EatTheBlocks" YouTube Channel is another great resource to learn Smart Contract and dApp development on the Ethereum Blockchain. The channel is very developer-focused and covers a wide range of topics such as Solidity, Web3.js, OpenZeppelin, Money Legos (DeFi), UI / UX and more. Clicking on the "Playlists" tab will show you curated lists of videos from such topics.
Protip: The <a href="https://github.com/jklepatch/eattheblocks">eattheblocks GitHub</a> repository is the central place where all the channels code is published and released. In it you'll find projects for topics such as Flash Loans, ERC-20 Tokens, DEXes and more.

Videos to learn Blockchain- and Smart Contract development.

EatTheBlocks

"Echidna" is a fuzzing / property-based testing tool for Ethereum Smart Contracts. With Echidna you can generate random input data according to your Smart Contract ABIs.
This is very useful for automated tests as you don't have to come up with the assertions but Enchida does. Once a problem is found, Echidna lets you further shrink down the input domain to find an exact way to reproduce the issue.
Protip: Use <a href="https://github.com/crytic/etheno">Etheno</a> to simplify the setup of Echidna in large multi-contract projects.

Tool to fuzz / property test Ethereum Virtual Machine (EVM) Smart Contracts.

Echidna

Economics Design is a great resource to learn more about Tokenomics and Token Engineering. Browsing through their <a href="https://www.youtube.com/c/EconomicsDesign/">YouTube Channel</a> you'll find in-depth analysis of existing Crypto projects, Explainers for concepts like "Bonding Curves" and the Mathematics behind Token Economics.

Website dedicated to everything related to Tokenomics and Token Engineering.

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