I play blues guitar, and am always looking for instruction that may give me a better understanding of the art. I had seen some things of Don Mock's on youtube that impressed me. He appeared to be a great communicator, and could take the mystery out of learning. I'm afraid that this DVD did nothing for me, though. After watching it once I put it on the shelf for a year. I gave it another try, and it went back to the shelf where it will probably reside forever. Sorry for not being more specific as to it's faults, but hopefully my impression after giving it a second chance will have some merit. I play the blues, and this didn't do it for me.