Alternate Tunings Guitar Essentials: Acoustic Guitar Private Lessons with CD (Audio) Book

This book contains a lot of very useful information. So much that I spent over a year reading it so I could slowly implement different aspects into my playing.
I wouldn't recommend it to everyone however.
The author tries to describe a lot of movents and processes in the tiniest details, wich often can be overwhelmingly exact. This can lead to very stiff movements and fixations on partial movements when trying to replicate them all in practice.
Beware of trying to do everything exactly as precise as described from the beginning, as it may be damaging to your fluidity and musicality at first.
I would recommend this book only when reading very slowly and trying to implement one thing at a time with oversight of a teacher so you won't overcompensate or exagerate certain things.
Making connections between the first chapters about movement control, goal conception, equilibrium and gestalt is crucial in every following chapter.
When properly used, this book can be very, very helpful.