Just a quick note to share a find.
The Khan Academy is a new old find. It's got some nice visual tutorials on math and science, SAT tutorials in math, and much more than I can describe here. I'd found it months ago, but then didn't get back to it. NPR recently did an interview with the man who's doing it and so I was reminded of it.
My oldest recently purchased an refurbished ipod classic, and so has been enjoying some audio finds. Playing with the Khan Academy youtube video I discovered it can be downloaded and that my computer knows how to change it to an Apple ipod format. Yea! Now these tutorials can be watched on a portable device anywhere.
I sound like a commercial don't I? :-p