Before I praise this book, I must admit that you do need to have basic grasp of traditional (information processing) approaches to skill acquisition and performance, and good sources for that information are "Motor Learning and Performance" by Schmidt and Wrisberg, and "Sport Skill Instruction for Coaches" by Wrisberg.
The book presents the best source on information on constraints-led approach. It is a hard read because it changes your old model/paradigm, and this takes time, energy and good will to change. Although "the map is not the territory", constraints-led approach much better explains skill acquisition and performance than traditional approach.
The book starts by explaining traditional theories, and then goes to explain concepts from complex/dynamic/open systems, like self-organization and skill as emergent behavior under constraints. This is very different than traditional approach and takes time to digest, along with concepts form ecological psychology, which basically states that you cannot research movement without perception and information flow, which basically lead to name the motor skill as perceptual-motor skill, because perception and movement are very interconected.
Further chapters are more practical and deals with guided-discovery, ecological psychology, implicit learning, external attention focus, modeling, modifying constraints, variability etc, etc.
I must say that this book is absolutely a MUST read for every coach, personal trainer, physical therapist or anyone involved into teaching someone something, form army, firefighters, car drivers, pilots, fixing cars....
Really wonderful book that shift paradigm on skill acquisition and basically start a new era on learning. There are lot of more work and research to do to make constraints-led approach more applicable (although there are books that are more practical in nature like "Play Practice", and "Teaching sport concepts and skills" and literature on Teaching games for understanding) although a lot of expert coaches already used this approach without knowing it.
Profesor of Sports
Graduated strength and conditioning coach