RE: duck and goose calls
The best thing to do is to start off with a set that has a good instructional cd in it. Buck Gardner makes one for like 30 bucks. Another thing you can do is just get a cheap duck call with an instructional cd. If you can learn to blow a duck call, it makes it much easier when you start to blow a short reed goose call.
The best way to learn is to have someone that knows what they are doing to teach you. It is much easier with them listening to you and helping you then you trying to figure out if you sound right on your own. Good Luck!