Three ways to hunt any kind of goose.
1) Over decoys - They come into the decoys (on their own, or calling them in), you shoot them. Typically, set-up in areas where they have previously been feeding. Be careful that you are not hunting over a field that can be considered baiting.
2) Jump shooting - My favorite type of hunting. Do a sneak on some in a field, or in a pond, or on a river. Fun stuff.
3) Pass shooting - Figure out where they are flying from and where they are landing, then find a spot near one of those locations and slay them. Just don't skybust.
Steel shot, duck stamp(s) and decent waterproof boots, or waders. Dark goose season is more conservative on numbers and dates. Light goose season is more liberal on numbers and dates (because snow geese are flying carp).
Is that the kind of info you're looking for?
Eric