The Reef aquarium Vol. 1 by Delbeek and Sprung is good, also the Modern coral reef aquarium Vol. 1 by Nilson and Fossa is good. Both of these books contain TONS of information, and will tell you more than you could ever want to know. The Reef aquarium Vol. 1 has all the information about setting up the tank, and gives info about clams, and hard corals. Vol. 2 covers soft corals. A third volume is planned. The Tullock book is good also. It is straight-foreward and easy to understand.
Sonny