This book sets out to help programmer and manager to implement an 'XP' style of programming. It doesn't show you what XP is, that is in the first book, this book puts that information into practice.
The book is heavily laced with examples of good practice, normally more than one way so that they fit in with people's needs and restrictions.
What I liked about the book was the stories of different companies that implemented XP and showing why it worked. It makes you feel like this book isn't just telling you what to do, rather showing how others have managed to get it working.
There is a lot of information in this book from across the whole scope of XP from 'reasons why your manager will never let it happen' to 'when to write acceptance tests'.
It's a good book, well-written and easy to read. It can certainly help somebody implementing XP, giving numerous examples of good practice and benefits of thinking differently.