Re: Hello from Idaho!
Welcome to the forum. You are in a great area for a fly fisher. Joni is right on target, as usual. Check with local fly shops or try and locate a FFF or Trout Unlimited club. Take a lesson or two. The instructor will usually have good gear for you to try out. If not follow Joni's advise and cast all the different rods you can get your hands on.
If you are ever on the water and see a good caster strike up a conversation and tell him you are a beginner. Nine out of Ten times he Will let you try his rod. He may even give you a fly that is working or at least give you a heads up on what is working for him.