Two articles to learn about cryptostuff, blockchains, web3.0, and programming, all at the same time:
First, how to write data (disclaimer: you’ll need to spend some money as Ethereum):
Article 1: How to easily post data in the Ethereum blockchain network forever -with no programming
And then an article on how to read data (no need to spend money for this):
Article 2: Read Public Messages from the Ethereum Network with Simple Web Programming
