I assume that you're a fellow mac OS X user. I found that a lot of things in linux are quite similar in concept to OS X (or is it the other way around?).
I recently installed fedora FC4 to an old dell computer my wife discarded, and have been having fun trying to learn to set it up as a server.
If you want to install linux on your mac, you need to download ppc iso's and burn them to disc--the i-386 iso's won't run on a mac.
Hope this helps...