The book is not really about algorithms, it talks about async, multithreading, with example on a building a chat app or a Wikipedia parser and a tweeter clone.

The book is not really about algorithms, it talks about async, multithreading, with example on a building a chat app or a Wikipedia parser and a tweeter clone. So it's more web backend oriented for the practical stuff. Obviously it also goes into Nim specific features like metaprogramming, interfacing with C and JS and the standard lib features in general.