The 2 Position Guitar Scale System: Scales and Arpeggios

Guitar Modes Vol. 1

Guitar Chord Progression Encyclopedia: Includes Hundreds of Guitar Chords and Chord Progressions in All Styles in All Twelve Keys

Understanding Guitar Chord Progressions

Fretboard Secret Handbook (2nd Edition)

CAGED System: Transposable Chord Shapes

Melodic Soloing in 10 Days

Power Chords: 130 Diagrams For Guitar

Your Training Notebook On Pop Music Special Chord Progressions: Composition / Learning / Harmony / Arrangement (Suitable for guitar and more musical instruments)

Guitar Power Chord Dictionary: CAGED System

50 Guitar Hacks: For the Thinking Man's Guitarist

Beyond Pentatonics

The Ultimate Guitar Chord & Scale Bible: 130 Useful Chords and Scales for Improvisation

Fretboard Positions Diagram: A Guitar Fretboard Unscrambler

Simple Chord Tone Soloing System