The book is packed with information, advice (for blue, and pros). We learn enormously whatever their level and that is where the great strength of this book. The author knows whereof he speaks because he also has a passion for many years. He does not hesitate to share his experience to make us adopt the right mindset, the right attitude against the other, go faster and "roll with his head."
A true bible, if you're a fan go ahead, it worth every penny.
The only gripe that I can do (Always make one) is that the book deserves to be updated, especially with regard to the recommended hardware. No big deal in brief ...