Let me tell you a little about my musical background before I talk about the specifics of this book. I'm forty years old and have been involved in music my whole life (singing and playing piano and french horn), but I am new to guitar. I bought my first guitar about five months ago and I've been trying to work on a balanced approach: basic chords, classical, and blues.
This book had been sitting on my shelf for a few weeks, but I figured I should get it out and try it. I was able to skim the first few lessons on note reading and rhythm, just playing each exercise a couple of times since I still need very basic practice. I'm sure folks who are new to music reading would need to spend a few weeks on that portion, but it is all explained fairly clearly and the author gives some good practice material. I'm now practicing the material in lessons 8-11. What I enjoy is that the exercises get you playing a variety of rhythms, solos, and riffs which are not too difficult to get started on. I really should probably slow down and practice each portion thoroughly, but it's just been so much fun to read and try out the material.
I would imagine if you are already a very experienced guitarist, particularly in rock/blues that there won't be enough to keep you interested in the first half of the book, but for those who are new to guitar, this book seems like a great intro.