Hey Talt1, I just started to turkey hunt last spring. I kind of did things backwards and started out with a mouth call. There were a lot of fustrating moments with it but I kept with it (amazing how many hours a week you can pratice sitting alone in a squad car). If I had to do it over I would start with a box call and a pot / striker. It was much easier to get the right tones and cadance with those calls. I would then go to the mouth call because they are great when you need your hands free for your bow / gun. I found that Primos DvD Mastering the Art Spring Turkey Guide was very helpful. I also got a Primos combo pack of mouth calls with an instructional CD that was very good for learning basic turkey calls. H.S. Strut University also has a series of DvDs that the new hunter can get a lot of information from. They are Vol. 1 So, you want to be a turkey hunter, Mouth Calling 101, Friction Calling 101 and Box Calling 101. Each of the 101 videos comes with a call also.
After you get comfortable with your calls I would find and area before the season that has turkeys but you wont be hunting. I would then go pratice on and listen to live birds. I did this last spring and I believe it helped dramaticly. In fact I was lucky because there are several areas of state land in the city limits here that dont allow hunting so I got to pratice from Mid March right up to the time we got to hunt in late May. I plan to continue this pratice because there is no finer instructor then the real thing.