Where to get flies?

[REPETER]

I've fly fished a little here and there, but decided I wanted to get more serious. Since I won't be tying my own right away, I wanted some advice on where to get flies. I currently live in Provo. I plan on mostly fishing with my fly rod from a float tube in lakes for trout, but will also hit an occasional stream or two. I'm guessing at least a few of you tie up some to sell, and there are probably some good shops around. So I'd like to know, if you don't tie your own, where do you get your flies from? And is there anywhere that I should stay away from?

TIA~ REPETER
[signature]