Paul: +1 for the advice that Flytire gave, especially since you live in Longmont, you should have several local fly shops available. Charlies is a bit of a drive, but you can't go wrong getting tying lessons from a master tier.
This month they are starting up their wed night fly tying classes. If that doesn't work, they also do Sat demos.
Charlie's FlyBox - Metro Denver, Colorado's Best Fly Fishing Retailer (flyshop) with online Fly Tying Tutorials
Charlie's FlyBox - Colorado's Best FlyShop and online Fly Tying Tutorials