I own eighteen Oreilly books at the moment. Of all
of them this one has to be the biggest disappointment. It is riddled with typographical,
grammatical, stylistic, and technical errors. Most of these are addressed and documented in the errata however. Additionally, this book is an unnecessarily hard read due to poor explations and details of key concepts and examples. While the actual content of this book is magnificent, solid, and well thought out, I would highly recommend waiting for the second printing of this book before purchasing it.