I suppose Finding the Winning Edge is a super informative and insighful - Brian Billick, Bill Walsh, James Peterson explained all the details in a perfect manner
Paul D. WeitzekkerLondon
The concepts explained in Finding the Winning Edge PDF book are not the simplest ones. But however, Brian Billick, Bill Walsh, James Peterson is a higly-skilled in making such kind of material easy to understand and implement in practice.
Henry Matteo GarciaParis
I found this book very helpful - Brian Billick, Bill Walsh, James Peterson is a great teacher and writer. Probably Finding the Winning Edge is the one of the best on the topic