I feel that this book was titled deceptively, for I believe the audience for this book are among the intermediate level DSLR photographer, not the expert. This book will certainly be a good stepping stone to take the intermediate photographer's art to a new level, however. All around, this book offers great examples, insightful techniques, all well-balanced by digital photography theory.
An excellent resource - at last a book written for intermediate to advanced photographers. Written in a clear, but not dumbed-down format. Highly recommended.