Man, it's hard to know where to start on this one.
For waterfowl hunting, buy "Successful Duck Hunting" by M.D. Johnson. It's only been out for about a year so it has good current information on shotguns, ammunition, decoys, etc. I haven't seen it in any bookstores so you may have to special order it. Very good reference for a beginner.
Some good resources on the web:
Refuge Forums
http://refugeforums.com/refuge/index...439e8bbd5d5f28
Lots of info categorized in sections such as: Gun Dog Forum, Upland Game Forum, Shooting and Reloading Forum, etc. There's even one just for the Oregon guys.
Waterfowler.com
http://www.waterfowler.com/inportal/...-2-1-:s-3:m-1-
Similar to Refuge Forums
Flockknocker's Goose Rooste
http://www.floc********.com/
Like above, with the emphasis on goose hunting
You'll get tons of advice on here about guns, decoys, ammunition, etc. Everyone has their favorites. M.D. Johnson's book has good advice and he's a pretty credible source of information.
My suggestion is leave the "broom" at home and get either a Remington 870 Express or Benelli Nova pump gun in 12 gauge with 26" or 28" barrel. Either can be had for less than $300 and both are dependable guns at a very modest price. If you want the Mossberg do your friends a favor and find one with an UNPORTED barrel. Camo on guns is way overrated, except maybe for turkey guns. Black plastic stock is the thing....can't really hurt it and it's ugly to start with so no problem dropping it on a rock or into the water.
There's lots of good ammunition out there but prices are all over the map. Steel shot is weird stuff; make sure you pattern your gun with whatever you end up with to make sure it performs well with the gun and choke you have. After trying lots of it, here's my advice:
-Forget the 3.5-inch 12 gauge shells. Very expensive and very little advantage over the 3-inch shells.
-Kent and Estate brand shells are very popular for a reason: they're good and they're cheap. Buy some 3-inch, 1 1/8 or 1 1/4 oz. shells in #2 or #3 shot and you'll be set for ducks. If you get tempted by the low-end stuff that goes on sale all the time, check the label for muzzle velocity and don't buy anything less than 1400 fps.
-BiMart and Sportsman's Warehouse have good prices on guns and shells. BiMart won't have much on the shelf until hunting season arrives but will order stuff for you.
One or two dozen cheap decoys will put you in the game most places. Flambeau or Avery are decent and don't cost a lot.
Get a decoy bag that has backpack straps; most will hold 2 dozen standard size decoys. Forget the extra large decoy bags unless you want to have it banging against your ankles all the way to the duck blind.
Don't worry about calling ducks. It's not nearly as important as most guys think, and a bad caller
will chase 'em all away every time. Have someone teach you. Be able to actually sound like a duck
before you try it in a duck blind.
Join a Retriever club. I hooked up with the Oregon Hunter Retriever Club and it made all the difference in the world for my first attempt to train a gun dog. Also met lots of good folks; some became great friends and hunting partners.
Someone else chime in here....
Mike