I’m an occasional user of Ubuntu (had a DVR running with MythTV when I had an extra system), and with the release of Hardy Heron coming up, FOSSwire has created a new Ubuntu cheat sheet for non-Linux folks who want to try it out. Many of these things have Windows-style GUIs you can use, but if you want to learn more about the command-line, it’s a great reference. Spotted at Lifehacker.