Start at Puget Sound Fly Company, Anil and crew are awesome and very knowledgeable. They are just up the street from you. Buy your fly line there, and $20 worth of fly's and he'll steer you the right way. In addition, start using the research function here. From Fort Lewis head over the Narrows bridge and hit any public access you can find. Best time of year to start for sure.
Good luck brother,