Is it worth it...I payed $24.95. It depends on where you are with a guitar now. I was a beginner and not doing anything except basic chords. It is mostly drills with the major scale and stretches and warmup. I'd hate to recomend it if your level is way above where it can take you. It sure won't hurt anything except your pocket book. You make the call. :D
...don't criticize what you can't understand. Your sons and your daughters are beyond your command. Your old road is rapidly agin'.
