I am just beginning to take guitar lessons and I was amazed at the sessions (on-line course) dealing with the parts of the guitar, the fretboard, notes, etc. None of the lessons dealt with how to use your fingers on either hand or how to change strings with either hand. This book devotes chapters to those mechanics. And I like that it is written with a subtle taste of Eastern philosophy. It is meticulous and the exercises are repetitive but it builds a solid foundation for playing the guitar if you practice. The book is based on practice techniques not on playing. A good read for beginners and I would think for veterans who want to improve their technical skills.