blockchain-dev Blockchain development tutorials and demo code Node.js Blockchain tutorial https://hackernoon.com/learn-blockchains-by-building-one-117428612f46 Pet Shop Tutorial - Solidity, Truffle Framework (Ethereum) http://truffleframework.com/tutorials/pet-shop Simple Storage - Solidity / Truffle Debugging Tutorial http://truffleframework.com/tutorials/debugging-a-smart-contract CryptoZombies https://cryptozombies.io/