The author is a Grandmaster (Andrew Soltis) a journalist of many chess magazine, he is notoriuos writer. This Author is one of my favorites modern writers.
This book focus, for club and expert player, or player that has a develomented repertoire.
Fist, not for beginer this book is not for develoment chess skills or teach opening.
This book cover all keys opening variation, also discussed the benefits and drawback of each set move order along the opening. these is a secret weapon for GM player. Like Kramnik with 1, Nf3.
If you are a beginer player, searching stategic approach, leave this book for later, When you prepare your opening and becoming strong club palyer or expert, used this book.
For coaching, this book, helps a lot, but not for childs. I wrote this for any parent or school trainer is reading this review. If any is coaching a team for local, regional or state tournament, this book could help for over U 10 event.
I am strong player, maybe over 2000 USCF, i defeated FIDE MASTER, and i used this book just for search some lines, this book is just for used like a adviser. No more I knew and bought it.
Do not espect more.
I hope this review help you