I would echo the advice from default.mp3: "just pick which is the most convenient/cheapest for you and go with it." ANY quality trainer should be able to provide you with a good, basic intro to the shooting world and address the "what am I doing wrong" issue. As others have mentioned, different instructors tend to focus on different issues or areas, but any of them should give a somewhat similar intro/basic shooting program.My biggest issue is: which one do I take?