You can just read "Bitcoin: A Peer-to-Peer Electronic Cash System" by Satoshi Nakamoto, it's very readable. I personally like "Shelling Out: The Origins of Money" by Nick Szabo as well, for giving some background/entry-level theorizing about money.
With all due respect, Nick Szabo is a computer scientist, not an economist or an economic historian.
Personally I'd recommend "The Ascent of Money: A Financial History of the World" by Niall Ferguson for a more complete look at what makes money, money.
Here's a pretty large literature list as well: https://nakamotoinstitute.org/literature/