I'm working on a book covering parallel and concurrent programming in Clojure, with the style of building abstractions before actually using them. On the topic

I'm working on a book covering parallel and concurrent programming in Clojure, with the style of building abstractions before actually using them. On the topic of Joy of Clojure, as far as I could tell, the book is not meant to be an introduction to the language, rather meant to be read once already familiar. It's helped me internalize concepts I'd picked up through usage.