Much of the Scrabble literature I have read concerns spectacular, high-scoring plays, but doesn't devote any time to handling the everyday moves that make up the bulk of the game's strategy.
Play Like a Champion gives the reader an insight into the thought processes of a top player. Simmons leads us through the reasoning behind each of his moves, taking into account the factors like score and rack-leave, familiar to club-level players, but also the current game score; his opponents last play; the need to open up the board or play defensively. An important and comforting realisation for me, was that even the best players suffer doubts, miss bonuses and make tactical errors.
The "quiz yourself" format, coupled with expert discussion of Simmons' moves is an excellent way to get a feel for the strategy of the game. I would like to see more books like this one.