That book's author, David Gerard, has a blog [0], where you can get his take on cryptocurrencies, and he's on Twitter [1] too (there's a tweet linking to his popular blog posts there, which might be helpful in getting started [2]).
[0] https://davidgerard.co.uk/blockchain/
[1] https://twitter.com/davidgerard?lang=en
[2] https://twitter.com/davidgerard/status/1051585096988467200