I've been training Colemak for three days now. A couple of weeks ago I finally learned Dvorak, but realized that my right hand was killing me because of stretching to reach the L with my right pinkie. So, I ditched that and rediscovered Colemak and jumped on full steam. However, I was disappointed to find that there was no web-based Colemak typing course like the ABCD Dvorak typing course that I took... so I wrote my own. Please let me know what you think of www.learncolemak.com.
Learn Colemak, no download necessary: www.learncolemak.com