https://buildspace.so was good for introducing me to the ropes of solidity and web3. Since then I've realized how useless and inefficient web3 is outside of DeFi, and since DeFi can only be made by geniuses that also have enough money to pay security firms to ensure a single smart contract doesn't result in a hacker leeching all your funds, I've stopped learning everything crypto, but while I was still convinced, buildspace was a really good intro. I did their solidity tutorial (few weeks) and make an NFT webpage tutorial (few days). Not at all comprehensive, but it helps you get started really well and fast