Both JL and King Ed carry it. It's terrible as a reference book, but an absolute gem as an idea book. If you're ever looking for inspiration, completely new concepts, or trying to troubleshoot something in your setup, grab it for sure. While you won't see "Yellow Watchman Goby - keep at pH X, salinity X, may exhibit aggression towards conspecifics and spawning can be induced by doing blah blah blah...", you can get a feel for how to successfully keep the species by seeing what the tank parameters are and the photos.
There may be a separate section for discussion (I've only looked at it in stores, never actually brought it home and read it cover to cover), but it's essentially photos of many excellent reef tanks around the world with a detailed list of the equipment and procedures involved with it.