Another vote for the Mountaineers Photography class. Each weekend for the fairly long length of the course they have field trips and seminars setup.
These allow not only a great variety of content, but also access to the expert photographers that are running the program.
At the end, and at a few meetings throughout, they have critique sessions where you can get feedback on your photos. They have sessions with professional photographers, most of which are free, some of which require a slight additional fee. They're all worth it.
It is not geared towards digital photography (or at least was not when I took it) but the solid basis it gives you is well worth the time. There was a session on digital photography workflow, and I wouldn't be surprised if this portion has grown since I took the class three years ago.
It helps if you have a camera that allows manual use, and a tripod mount ability is a must (look for the bolt hole in the bottom) They do have a few loaner tripods, but they vary in quality and amount based on the trip, so you're legs above everyone if you can bring in one of your own.