One very simple and basic piece of advice is to use the enviroment around you when choosing a fly. Look under rocks, in the grass, in the air, and in the water for bugs that you have a fly of. Hopefully you have a large amount of flies because there are allot of bugs fish eat.

The best advice I ever got was this "Go have Fun". Flyfishing should not be a chore for you. Fly fishing opens your eyes to the nature around you. You see insects hatching and flying around the streams and you'll notice that's what the fish are biting on. Hike the stream a bit from crowds and look for the runs riffles and pools that hold fish. Watch the banks and don't pass on a spot you think does not hold trout. Too often have I caught them where I did not think they would be, and more than one from the same that same spot. There will be others who have so much knowledge and there will be the gear heads that will tell you what to buy and of course "you need this". They may be right. But right now go see your local guide or fly fishing outfitter, ask them what is the pattern now for the waters your going to and they should help you. They will even help you tie or pick out the flies you would use. Also when on the stream keep low, do not cast shadows, and avoid walking into the stream like a bull. Also try practicing casting a lot it will help. Good luck and tight lines

Get a video. first fish for sun dogs then move up.