to the world of waterfowl hunting , My first little piece of advice is to stop now and run away as fast as you can wail you still have a shred of sanity,dignity and common sense left.
But I bet its to late for running, so have fun, take tons of pics, make a lot of great memories and enjoy every sunrise out in the marsh. oh ,on a serious note you can read a ton on hunting ducks and geese and a lot of it is all great advise. But the most valuable waterfowl hunting knowledge comes from the birds themselves. If you can learn to "read" ducks and geese, you will be able to kill any duck or goose out there.