Tips from Craig are as follows.
Start by fishing a local pond where you can catch bluegill easy. This give you the experience of casting retreiving and catching fish. The practice will serve you good as getting fish on the reel once you have alot of slack line out is not always easy to do. I started casting in a well mowed soft grass lawn where you can first learn to cast at all. Then head to the pond and practice casting further distances with and against the wind. Try casting for exact spots so to learn accuracy. This will all equate into better fishing experience and success on the stream or river later as you will need to make good casts into the pools or seams of a stream in order to succeed. Your casts in the beggining will also either float in the air too long and blow around or slap the water. These casts are good to try to get rid of while you are just chasing gills as on a stream with spooky trout you will loose the hole to a slap cast. Next go fish a brook trout stream with beaver ponds where you are still likely to catch some good #'s of fish and learn to fish a stream. Fish the beaver dam, the flat run above it entering the pond, and the deep hole normally right below the dam. These spots represent different styles of water you will encounter in the average stream or river as slack water, runs, and pocket water. Wtih this all said, then you can head to a tougher river or stream to fish where bigger fish lurk, but the likely hood of catching one is lower even for a seasoned veteran. I have flyfished for 20 years and know that to this day, I can fish a famous stream or river and have great days and slow days, or I can crawl into a highmountain brookie stream like the one on Guanilla Pass south of Georgetown and catch a bunch of fish. From Greeley you can also head to the east portal of the moffat tunnel west of rollinsville and do well in South Boulder creek for some nice mixed bag trout fishing. The water normally runs clear, is wadable and holds good #'s of fish especially the closer you get to the train tunnel. These types of tips will get you on the right track and as usual if you have further questions, just ask.