Here are a few links we think are worth a look. We are not endorsing any of these organizations, but we think that you can find them helpful. That said, in no particular order:
WA Department of Fish and Wildlife - Get your hunting/fishing info here.
Topozone - A favorite site for Topo maps
NRA - National Rifle Association
National Muzzle Loading Rifle Association - The name explains it!
THR - The High Road - National free online forum.
Northwest Firearms - Most are further south but another regional free forum.
Armslist - Online classified ads for everything firearms and accessories.
Seattle Guns - Local forum, Paid membership required. Dealer/FFL status required to sell. Use WAGuns or Armslist if you aren't a dealer.