Hacker News Reader

Clojure Koans, is similar to 4clojure, and also worth a look> http://clojurekoans.com/

Bookwise, I thought the following were pretty good: 'Clojure in Action' by Amit Rathore and 'Clojure Programming' by Chas Emerick are both solid intro Clojure books. 'Web Development with Clojure' by Dmitri Sotnikov is also a great book, which obviously comes with more of a web-slant.

And I'd give a second thumbs up for 'Clojure for the Brave and True'.

http://www.braveclojure.com/ is pretty good read.

I saw http://www.4clojure.com/ mentioned elsewhere in this thread. That'd be as good a place as any to start.