What is this?
A free beginner-to-expert Solidity, blockchain, and smart contracts course (Python edition) made with FreeCodeCamp by Chainlink's org — this repo holds the lesson notes, code, and resources for the YouTube course.
A free beginner-to-expert Solidity, blockchain, and smart contracts course (Python edition) made with FreeCodeCamp by Chainlink's org — this repo holds the lesson notes, code, and resources for the YouTube course.Am I watching a video course here, or do I clone and run something?It's a video course on YouTube. This repo is its companion: a lesson-by-lesson outline with code links, plus notes on known hiccups you may hit while following the video.
It's a video course on YouTube. This repo is its companion: a lesson-by-lesson outline with code links, plus notes on known hiccups you may hit while following the video.Where does a complete beginner start?Watch Lesson 0 on YouTube, then build the Lesson 1 simple storage contract inside the Remix browser IDE with MetaMask — no local installs until the tooling setup that begins at Lesson 4.
Watch Lesson 0 on YouTube, then build the Lesson 1 simple storage contract inside the Remix browser IDE with MetaMask — no local installs until the tooling setup that begins at Lesson 4.What do I need installed on my machine for the later lessons?From Lesson 4: VSCode, Python, and Web3.py; from Lesson 5 the Brownie framework (pipx install eth-brownie); Node.js for local Ganache chains. Windows users get a dedicated setup guide linked at the top of the README.
From Lesson 4: VSCode, Python, and Web3.py; from Lesson 5 the Brownie framework (pipx install eth-brownie); Node.js for local Ganache chains. Windows users get a dedicated setup guide linked at the top of the README.Is the course still current, or has anything aged badly?Parts have aged: the Ropsten, Kovan, and Rinkeby testnets are deprecated (Sepolia is now recommended), its faucet asks for Twitter verification, and Lesson 7 still uses Chainlink VRF v1 instead of v2.
Parts have aged: the Ropsten, Kovan, and Rinkeby testnets are deprecated (Sepolia is now recommended), its faucet asks for Twitter verification, and Lesson 7 still uses Chainlink VRF v1 instead of v2.Do I need to already know Solidity or Python?No — it opens with what a blockchain even is (Lesson 0), teaches basic Solidity in the browser from Lesson 1, and Python tooling only appears at Lesson 4 with Web3.py.
No — it opens with what a blockchain even is (Lesson 0), teaches basic Solidity in the browser from Lesson 1, and Python tooling only appears at Lesson 4 with Web3.py.What will I actually build across the lessons?Thirteen lessons: blockchain basics, Solidity in Remix, inheritance and the factory pattern, a Fund Me contract with Chainlink price oracles, raw Web3.py scripts, Brownie projects (simple storage, fund me, a smart-contract lottery), ERC20 token standards, DeFi with Aave, NFTs with IPFS metadata, contract upgrades, and a bonus full-stack DeFi staking yield dapp.
Thirteen lessons: blockchain basics, Solidity in Remix, inheritance and the factory pattern, a Fund Me contract with Chainlink price oracles, raw Web3.py scripts, Brownie projects (simple storage, fund me, a smart-contract lottery), ERC20 token standards, DeFi with Aave, NFTs with IPFS metadata, contract upgrades, and a bonus full-stack DeFi staking yield dapp.How much does following the course cost?The course itself is free, and you practice on testnets: ETH and LINK come from faucets like the recommended Sepolia one, which just asks for a Twitter verification — no real money needed.
The course itself is free, and you practice on testnets: ETH and LINK come from faucets like the recommended Sepolia one, which just asks for a Twitter verification — no real money needed.What is Brownie and why does half the course run on it?Brownie is a Python smart-contract framework adopted at Lesson 5: brownie init starts a project, brownie compile builds contracts, deploy scripts use a main() entry point, tests run pytest-style, and it spins up a local Ganache chain by default.
Brownie is a Python smart-contract framework adopted at Lesson 5: brownie init starts a project, brownie compile builds contracts, deploy scripts use a main() entry point, tests run pytest-style, and it spins up a local Ganache chain by default.What makes this the Python edition?All off-chain work is done in Python: contracts are deployed, called, and tested with Web3.py scripts and Brownie projects instead of a JavaScript stack — Node.js only appears to run local Ganache chains.
All off-chain work is done in Python: contracts are deployed, called, and tested with Web3.py scripts and Brownie projects instead of a JavaScript stack — Node.js only appears to run local Ganache chains.What are similar projects?full-blockchain-solidity-course-js, WTF-Solidity, awesome-blockchain-cn, Project-Ideas-And-Resources, foundry, ethereumbook, nuvex-services, truffle
full-blockchain-solidity-course-js, WTF-Solidity, awesome-blockchain-cn, Project-Ideas-And-Resources, foundry, ethereumbook, nuvex-services, truffleWhich topics is it in?ipfs, nft, solidity, dapp, defi, ethereum, smart-contracts, web3, blockchain, course, beginner-friendly, testing
ipfs, nft, solidity, dapp, defi, ethereum, smart-contracts, web3, blockchain, course, beginner-friendly, testing