String Theories is the book every modern guitarist needs for a lifetime of inspiration and growth. In String Theories, renowned guitarists Adam Levy and Ethan Sherman offer a comprehensive and practical guide to boundless musical growth for the dedicated guitarist, as well as on-the-job lessons learned from both of their many years of experience as players and teachers. Originally adapted from Adam Levy's popular YouTube series Guitar Tips, the essays and lessons in String Theories cover topics including effective practice strategies, fretboard technique, playing with other musicians, composition, improvisation, listening and reading recommendations, and more. Concepts are followed by practical exercises and plans of action-things you can do today, throughout the week or month, or even all year. String Theories will offer something different yet equally useful to the student, hobbyist, or pro-and everyone in between. Offering a framework for lifelong growth on the guitar, it's a book you can return to year after year as you evolve as a musician.