Learn how to build a blockchain app using Ethereum smart contracts in this video course from Dapp University. A smart contract is a collection of code and data that resides at a specific address on the Ethereum blockchain.
You will learn how to create a todo app with Ethereum smart contracts using the Solidity programming language. You will also learn to write tests, deploy to the blockchain, and create a client-side application.
You can watch the full video course on the freeCodeCamp.org YouTube channel (1.5 hour watch).