Guitarist's Guide to Scales Over Chords
Chad Johnson
Fretboard Freedom
Troy Nelson
Vaideology
Steve Vai
Visual Guitar Theory
Chad Johnson
Connecting Pentatonic Patterns
Tom Kolb
First 15 Lessons - Acoustic Guitar
Troy Nelson
How to Play Blues/Rock Guitar Solos
David Grissom
Teach Yourself to Play Guitar Scales
Various Authors
Guitar Aerobics (with Audio)
Troy Nelson
Blues You Can Use
John Ganapes