This is a simple introduction to Unix from the CS Department website. Go through the list of commands in this page to get a feel for working in Unix/Linux.

These are short introductory courses given at the CS Department for new students every year. Check out the course notes for Emacs, Unix Intro and Permissions. It'll help working through your assignments.

Home page of the center where the CAVE is. Has help for tracker/projector problems, documentation, machine specs, etc.

Bill Buxton's technology briefs. Very comprehensive and up-to-date. The first one is on interaction devices.