what area are you from? you should either hook up with someone( join TU, lotta guys willing to take someone new out) or take a class through your local flyshop. i tried for 3 years to teach myself. when i finally broke down and took a class, things clicked.
with the bugs, especially the dries, ya gotta remember its the profile the fly makes on the water. the fish only see the underside. do some googling for instructional videos as well. i have been flyfishing for 6 years now, and still have lots of trouble with the bugs. but i don't get worke up anymore, it's all part of the journey.
sstart out with some adams and elk hair caddis for dries, with some variation for size and color. they will initate almost all the top water stuff you will see. throw in some ants and beetles as well. for nymphs go with som epheasant tails, hare's ears, nd prince nymphs. throw in some scuds and black wet flies too. i don't strreamer fish much, so can't help ya much on that. start out keeping it simple. the flies i mentioned will catch ya fish in most conditions.