Many colleges in Sweden have beginners courses in Solaris, which works in the same way as Linux at that level. But installing and upgrading a system isn't really at beginners level, using Linux for word processing etc nowadays is just as easy as using Windows. Changing system isn't as easy though, the system you already know is always easier to use. =]
Some update on my RH8 install, I've managed to get xmms working now. Besides removing the realplayer module (which is obsolete I think) I had to install an mp3 module as well since redhat doesn't include that. I thought I wouldn't have to do that though, since I had a working copy before.
I also think I might have found the problem why I couldn't do a new upgrade, there was an old install image still lying on the harddrive which might have been defective.