Post a job

11 smart contract resources to learn Web3

Smart contract: a program stored on a blockchain that runs when a transaction calls it and moves funds by fixed rules.

11 resources

  1. CryptoZombies

    CryptoZombies · Beginner · Tutorials

    Free, in-browser lessons that teach Solidity by building a zombie game; nothing to install.

  2. Solidity Documentation

    soliditylang.org · Intermediate · Articles

    The language reference: syntax, types, contract structure and compiler behavior.

  3. Solidity by Example

    solidity-by-example.org · Beginner · Tutorials

    Short, runnable Solidity examples, from Hello World and mappings to re-entrancy and ERC-20.

  4. OpenZeppelin Contracts

    OpenZeppelin · Intermediate · Articles

    Docs for OpenZeppelin Contracts, the audited Solidity library of ERC-20, ERC-721, access-control and upgradeable building blocks that teams reuse instead of rewriting.

  5. Ethernaut

    OpenZeppelin · Intermediate · Challenges

    OpenZeppelin's wargame: each level is a deliberately vulnerable contract you exploit, which teaches how attacks such as re-entrancy work.

  6. Smart Contract Best Practices

    Consensys · Intermediate · Articles

    Consensys Diligence's guide to common smart-contract attacks, such as re-entrancy and front-running, and the coding patterns that prevent them. No longer actively maintained.

  7. The Ultimate Solidity Course

    RareSkills · Intermediate · Courses

    A free Solidity course for people who already program: storage, ERC-20 and ERC-721, re-entrancy, proxies, gas optimization and walkthroughs of Uniswap V2 and Compound V3.

  8. The Foundry Book

    Foundry · Intermediate · Books

    The Foundry manual: Forge to build and test contracts in Solidity, Cast to call chains from the terminal and Anvil to run a local node.

  9. Mastering Ethereum (free edition)

    GitHub · Advanced · Books

    The Ethereum companion by Andreas Antonopoulos and Gavin Wood: the EVM, Solidity and Vyper contracts, tokens, oracles and dapps. Free on GitHub.

  10. Chainlink Documentation

    Chainlink · Intermediate · Articles

    Docs for Chainlink, the oracle network that brings price feeds and other off-chain data to smart contracts, with integration guides in Solidity.

  11. Ethereum on GitHub

    GitHub · Intermediate · Open source

    The ethereum organization on GitHub: the Solidity compiler, go-ethereum, the EIP and ERC proposals and the protocol specifications.