Guitar Theory Websites:
romeroguitarquartet.com
Romero Guitar Quartet - The Royal Family of The Guitar
lotusmusic.com
Music Theory, Books, Circle of Fifths, Learn Guitar: Lotus Music
See music theory like you've never seen it. These tools and books offer a unique approach to the circle of fifths, chord progressions, and scales.
guitaraccelerator.com
Guitar Accelerator - Accelerated Guitar Learning - Play Guitar | Guitar Lessons
Play Guitar: Your Best Online Resource for Accelerated Guitar Learning. Here you will find powerful, proven resources to learn guitar theory, scales, chords, technique, lead...