I was thinking of signing up for a few of those classes because I am a relatively new Mac user. It would especially come in handy for those iPhoto and iMovie classes since once you learn how to use it once, you don't have to learn it again. Can anyone give any advice if they found them useful particularly since it is free? Do you have much interaction with other people that sit around you? Are they small classes? Also, how long is each class relatively? I'd like to knock out two or three per day if possible.