Buy the video "So You Want to Be a Turkey Hunter?" and a couple of good books on the subject. Get a Lynch Fool Proof box call, a Primos Power Crystal pot call and a couple of double reed mouth calls and learn to use each of them. You will buy more calls later...lots more.
Scout, scout, scout and scout some more.

Pattern your gun and know what it will do at 15, 25 and 40 yards.
Go scout some more.
Camo up real good and go after 'em! Be patient. Be more patient than that.
Have fun with it. Learn the calls, practice to video tapes or audio tapes when you can. Turkey hunting is a blast. Go forth and get addicted like the rest of us!