I don't recall if this was mentioned in the other threads on this project, but I would highly recommend the section in Chapter 3 of the really fantastic "Clojur

I don't recall if this was mentioned in the other threads on this project, but I would highly recommend the section in Chapter 3 of the really fantastic "Clojure Programming" where the authors step through the processes of converting various programs from an imperative to a functional style. This was really my aha! moment with Clojure.