This is one of the better bass instruction books I have found and I have looked at or bought a good many of them. I use other books, but I always come back to Progressive Bass Guitar. It really helps the student learn the fretboard. It also teaches a variety of blues/rock riffs that can make someone sound good in a short time. It also touches on transposing skills, finger patterns and music theory. I pretty good buy for the price. I showed it to my bass teacher, who thought it would be good to develop your chops. Most of his students study jazz and have a tendency to play most types of music in a jazz style. Since the book is slanted more towards early rock/pop, he plans on recommending it to some of them to expand their styles of playing. The only negative comment is that the riffs on the CD are lumped together with four-five riffs per track. That makes it hard to reach a specific riff, but that is really a minor complaint. Other than that, I can't recommend Progressive Bass Guitar enough!