If you are new to tying you might want to start with something straight forward like buggers. Some beads for the head, Chenille and saddle hackle for the body and Marabou for the tail will get you started. There are lots of patterns out there with lots of different materials. In addition some pheasant tail tinsel and a variety of dubbing is a good start. A visit to a reputable fly shot (not a box store) will get you started. Its a bit of a loaded queston as there are a lot of different patterns out there.