Bob's Bible: Words, Anagrams & Hooks (Scrabble)
Book by Robert Gillis, listing 2-8 letter words along with their front hooks, back hooks, and anagrams.

Brow-Raisers
User friendly guide to building a winning word game vocabulary. Organized study guide geared towards the success of beginning and intermediate players.

Everything Scrabble, by Joe Edley, John D., Jr. Williams
Scrabble how-to book written by the National Scrabble Association. Learn basic play-making, a list of Q words with and without U, become an expert player. Complete list of two-letter words.