The DVD is great. At age 71 and over 20 years experience of and on with TGM I can't emphasize enough the importance of an instructor. Unfortunately you can't do it yourself no matter how high you IQ. You brain lies to you. The golf machine is filled with illusions and a endless assortment of "feels". However you need the basic "textbook" knowledge to get the most out of a lesson with an authorized instructor. You need to be able to speak the language. I would go see someone for several hours, the rewards will be beyound your expectations. I know Paul Hart and Paul Smith are wonderful at what they do. Go see one of em no matter the cost.
You really think TGM is that difficult to learn/implement?