TL; DR Mastering the Guitar 1A is an outstanding method book for guitarists to learn many popular styles of guitar playing in one place.
As a guitar teacher, I highly recommend “Mastering the Guitar 1A” for aspiring musicians. Co-authored by William Bay and Michael Christiansen, this innovative method provides a comprehensive approach to guitar learning, covering a wide range of musical styles and techniques. With over 155 solos and duets, 140+ scale and picking studies, and thorough coverage of keys like C, Am, G, and Em, it offers an excellent foundation for contemporary guitar performance. The inclusion of both flatpicking and fingerstyle techniques makes it an invaluable resource for developing well-rounded guitarists. The audio and video downloads enhance the learning experience, making it an essential tool for students aiming to master the guitar.