Chad Johnson: Visual Guitar Theory: An Easy Guide to Recognizing and Understanding Essential Fretboard Patterns

Seeing Music on the Guitar: A visual approach to playing music: 1

Guitar Theory For Dummies with Online Practice

Vaideology: Basic Music Theory for Guitar Players | Guitar Instruction by Steve Vai | Includes Practical Exercises, Scales, and Diagrams | Full-Color Guitar Educational Songbook

Sight Reading Mastery for Guitar: Unlimited Reading and Rhythm Exercises in All Keys (Learn guitar theory and technique)