Alchemy University's Solidity Development Course
It is an intermediate-level series of guided video lessons and hands-on projects for learning the fundamentals of writing Solidity smart contracts
Learn Blockchain, Solidity, and Full Stack Web3 Development with JavaScript – 32-Hour Course
This course will give you a full introduction into all of the core concepts related to blockchain, smart contracts, Solidity, ERC20s, full-stack Web3 dapps, decentralized finance (DeFi), JavaScript, TypeScript, Chainlink, Ethereum, upgradable smart contracts, DAOs, the graph, moralis, aave, IPFS, and more.Solidity by Example
This site teaches all Solidity concepts with examples from beginner to intermediate levelSolidity Documentation
This is the official documentation for Solidity