Mastering Ethereum

(c) O'Reilly, Andreas M. Antonopoulos, Gavin Wood

Mastering Ethereum is the de facto standard / best book explaining how Ethereum works. It is written by Andreas M. Antonopoulos, Gavin Wood (also author of the Polkadot whitepaper & blockchain) and is free for everyone to read online: 


Andreas M. Antonopoulos has tons of online resources (books, videos, workshops, ...) to learn about blockchain:

I actually started out my blockchain journey during the pandemic 😷 with his free video series about Bitcoin on YouTube.