Here's some info for you. Your local SCCA club (they do autoxes and track days) is at www.coloradoscca.org.
They held a novice school in the spring but just going to autox events will do you a world of good, they seem to have a pretty good novice program there. Just register as a novice and most SCCA chapters have instructors available to give you pointers, etc.
Your other good option is to do driver school events at local race tracks. I tried searching for Second Creek's website but the link wasn't working for some reason. Anyways, check the websites for local tracks and they will show what driver schools they are running. Usually put on by a local racing or enthusiast club. They are usually about $200/day. So you could do two full days of on track instruction and still have money left over (two days is a lot BTW).
Anyways, I did this in about 5 minutes of searching the web and I know next to nothing about CO. Ask your local i-clubbers about where they autox and if anyone has gone to some driver schools and I bet you'll get a crapload of info. Also the www.coloradoscca.org
site has it's own message board, a post there should help out too.