1. Introductory
1.1 Programming Clojure
Authors: Stuart Halloway, Aaron Bedra,
forwarded by Rich Hickey, the creator of Clojure
A very good book for clojure beginners.
1.2 Clojure Cheat Sheet(highly recommended)
Online clojure documentation, with examples for each functions, macros, etc.
2. Advanced
2.1 Clojure Programming
suitable for programmers with clojure experiences.