Ask YC: Anything like one-day or one-weekend intro classes?

Has anyone attended, or know of, short introductory classes on development topics like Ruby, Python, iPhone apps, and so on?

I always seem to have a long list of things I'd like to learn, but I know that it'll take me forever to really understand more than one or two of the items because of the time it takes to find good tutorials and reference books and start working my way through them when I've got a spare moment here and there. I can learn a lot faster if someone walks me through a topic, point by point, and is there to immediately answer questions that come up.

If there were intensive one-day or one-weekend classes on topics like Ruby, Python, etc., I'd love to attend. Anyone have any recommendations?