DOW (Colorado Division of Wildlife) web site is the place to start for information. Lots of info there.
Don't be afraid to call them. I have talked to them many times and they are usually very friendly.
You can also purchase maps and dvds from this site. I hunted this year in the San Juan National
forest in SW CO. The maps are a must because there is some private land inside the forest that you
don't want to get onto.