Pair one of these books with this one to compliment your studies:
You can also find some of these works in hardcopy in my Classical Guitar Tab book on Amazon. I have tested all these etudes with my students and found them to be very beneficial for learning musical and technical concepts. The first and last etude emphasize the importance of using etudes to develop a musical technique. The etudes have been arranged in a progressive order from easier to more difficult. Comes with both Notation-Only Edition & TAB Edition. Ten Classical Etudes by Sor, Carcassi, & Giuliani - For intermediate (Grade 4-7) classical guitar with fingerings, tips, and video Lessons.