"Programming Clojure" is a great book. Any book on a new programming language is going to evangelize the language - it's up to the reader to keep an open mind and decide for herself that it's a good fit for what they do. The book is started to get a bit dated now with Clojure up to release 1.2 now, but is still worth getting in eBook form to get a good understanding of the language fundamentals. I would also recommend the "Joy of Clojure" which is in early-access from Manning. They take a different approach to learning Clojure and are both useful to learn Clojure. Even if you aren't planning of using Clojure, it's worth a read to understand some FP concepts and apply them in [insert your fav lang here].