Resorts
Here's a list of all the major ski areas in northern Colorado.
Arapahoe Basin Aspen Snowmass
Breckenridge
 Copper Mountain
Crested Butte Keystone
Loveland Steamboat
Telluride Winter Park
Vail

Lodging, Area Info & Snow Reports
Look here for information on ski areas across the nation including snow reports, lodging, lessons, etc.
Resort Sports Network SkiTown
Snow Guide Resorts Snow Report