I assume that you are a software developer already. This is the plan that I would recommend: 1. Basics of cryptography: asymmetric encryption, public and private key, hash algorithms; 1. Blockchain basics and how it works in general. Understand blocks, transactions, consensus algorithm, etc; 1. Bitcoin: understand how it works under the hood. I think it is important because it is the first blockchain; 1. Ethereum and smart contracts: learn how Ethereum is deferent from Bitcoin and what is smart contracts; 1. Smart contracts development with Solidity: it has the most information and tutorials available on the internet than any other language for smart contract development and the language is pretty simple; 1. Decentralized storage (IPFS, Filecoin): it is an important component for many decentralized application; 1. Explore other blockchains and smart contract language and find the one you like the most. There are many promising projects out there as Solana, Avalanche, Sui and more.