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Woolly buggers are a great fly to start with. I prefer something with some flash in it like a sparkle bugger for smallmouth rather than strictly an original style woolly bugger. Oh, and bead head gets it down where you want it. A couple of other flies to try are a sneaky pete and small poppers, though in the heat of summers they're not as good as something like the bead head bugger that gets the fly down IMHO. Stick to the sneaky pete and poppers in the spring and fall.
Dry flies and nymphs are great for trout, but not for smallmouth. They prefer larger prey. A crayfish fly is also a good bet.