As an enthusiastic Scrabble player, I've always found it frustrating to find Scrabble books aimed primarily at beginners. "How to Win at Scrabble", whilst not ignoring beginners, provides advice and information that will be of interest even to the best Scrabble players.
As one would expect, there is plenty of excellent material dealing with the strategy of the game itself. The chapter on endgames is particularly good - a subject that has tended to be neglected in other Scrabble books. But what really differentiates this book from others are the chapters covering topics such as word-learning techniques, and the world of tournament Scrabble. My favourite chapter is the one that discusses the mental approach to Scrabble; how to give yourself an advantage over your opponent even before you sit down for the game. Fascinating stuff.
If you have any aspirations to be a winning Scrabble player, whether playing your mum, your mates, or the top tournament players in the country, you have got to buy this book.