As almost a complete novice at poker, particularly Holdem, I wasn't quite sure what to look for in this book. However, I found it all. Whatever aspect of the game interests you, there's an excellent primer on it here.
Naturally, most of the book focuses on the strategy of the game. It's quite an intensive trip for a beginner; there are a lot of new ideas to take in. However, in my view that's a good thing - you really feel like you're getting your money's worth. Every concept is explained clearly, with helpful examples, and there are test questions throughout which help both for practice and to clarify more intricate uses of the techniques. The cartoons are a little distracting - the reference to Benny Hill below sums them up nicely. However, there aren't too many and the rest of the book is very sound, written in a style that's clear and precise, but still easy to absorb.
I was also impressed by the amount of consideration given to other aspects of the game. A section on online play reveals the differences between this, the reason for the game's sudden overwhelming popularity, and standard "live" play. There's a chapter on cheating (not how to do it, but how to avoid being suckered by it), a section on poker psychology, a discussion of other poker games, and - most helpful of all - a chapter on money management and how to use it to keep track of your progress as a player.
The book dispels the fog of mystery almost harshly, but in doing so reveals that the game is, after all, learnable. It doesn't rely on gut feelings or some innate psychic ability. To start winning games, all you need is an understanding of some concrete, provable ideas - and this book shows you how.