Not sure I can help a whole lot, but there is a tun of information in this forum. If you know someone with calls blow them and see if you like them. For goose I would suggest a flute call for a new caller and CD's to learn how to blow them. Chokes, I think most would say modified, shot BB for goose, 2-4 for ducks, and what ever you can afford in brand of shells. I cant hit crap so I use the cheaper shells. Decoys are expensive, Hot Buys are normaly good priced and hold up well. I have big foot and gh goose floaters that I am very happy with.

Look at the other threads and form your own opinion. I am new to this too, so correct me if I am wrong