I have been a guitarist for 45 years and to this day, I still utilize the Vol. 1 & 2 of this author. I had a professional guitarist as a teacher and he used these two books for instruction and for a teaching tool for years. We have all seen the books that show chords and thousand of chords but these actually show you what chords go with what chords and alternative chording patterns. I would recommend this book for any guitar player beginner,intermediate or advanced players.