Re: Overwhelmed with flies!!!!!!!!
In general dry flies float and wet flies sink. Wet flies include wets, soft hackles, nymphs, streamers, most midges, and some emergers.
Beyond that it gets complicated. "dry flies" are generally intended to imitate the adult form of an aquatic insect that trout eat. These float, though sometimes need some help doing so. Terrestrials imitate land-living insects that often end up in the water. These generally float and include grasshoppers, crickets, beetles, inchworms, leaf-hoppers, junebugs, spiders, and ants. Poppers, divers, sliders, and gurglers float, and work great for bass and for panfish in small sizes. Some emergers float, although only just barely. Sometimes you'll want to dress them up with floatant to keep them on top, sometimes not.
For trout, get some Gold-ribbed hare's ear nymphs and some pheasant tail nymphs in a size 16 (beadhead version if the current will be quick) and fish them under a indibobber set at 1.5x the depth of the water you're fishing. If you want to fish on top, get some Adams (or Parachute Adams if water is calm) and treat them with floatant before fishing them, also sz 16.