Blockchain programming is little more complicated than any other programming. The reason is, it requires understanding of cryptography, distributed ledger technology, and a peer-to-peer network protocol. To start learning blockchain, start here with the tutorial series: https://www.jumpstartblockchain.com Rather than building your own blockchain from scratch, you may want to start learning an existing blockchain. Most of the blockchain implementations are open source and available for public to download. You are free to customize and create your own version of blockchain.