http://lvlimestoner.blogspot.com/2011/02/unacceptable-weather-also-fly-selection.html
Nymph: Pheasant Tails and Hare's Ears for nymphs, sizes 14 through 18.
Wet: Peacock-and-partridge soft hackles for wets, 14 through 16.
Dry: Elk Hair Caddis (or better yet, CDC-and-Elk) dry flies, 14 through 16.
Dry: Adams dry flies, 12 through 18.
Dry: Blue Wing Olive dry flies, 16 through 18.
Dry: Sulphur dry flies, 14 through 16.
Dry: Royal Wulff dry flies, 12 through 16. Stick to the classic upright wing(s) here, no parachute.
Dry: Beetles, 14 through 16.
Dry: Grasshoppers, 8 through 10, or crickets, 10 through 12. Both if you're flush with cash.
Streamer: Wooly Buggers in olive and black, 6 through 8.
For the dry flies, you can buy them regular or parachute style. If you're going to buy one, go parachute. Or, that's my personal opinion. If you want someone else's, navigate to another blog. The nymphs come in bead head versions or not, buy some of each.
Basically, that's a full listing of everything you need. If the bug coming off the water is light, you use the sulphur. If its dark, use the Adams. Those tiny little ones with the grey wings, you probably don't need me to tell you this, but they're the blue wing olives.
The terrestials come into their own in summer, when the spring mayflies have mostly run their course.
Then there's the Royal Wulff... What the hell does it look like?
Strawberries-and-cream said its designer, Lee Wulff. Besides being one of my personal pet patterns, its great for "prospecting," or randomly throwing a dry to likely places. It floats like a champ, works well as an indicator, and is a timeless classic. If people see the Wulff at the end of your line, they know you mean business.