Another thing to consider is your ability level. If you already have some basic knowledge and can play a few things, you don't need a guitar DVD that teaches the same basic notes over and over like you were a total beginner. If you are a total beginner, though, you don't want to watch guitar videos that are geared to a more experienced player. You will be lost and probably frustrated trying to learn quickly and catch up. Also consider the teacher's personality. The best guitar lesson DVDs features an instructor who enjoys teaching and who understands the process of learning the guitar.