I found this a little bit ago and thought it was awesome. I haven't looked over the entire thing yet but I just downloaded it, created a dir on one Slackware box, and now I'm reading through it.

If you wish to become a sys admin you can actually edit the source files in HTML, because it comes prepaired to be edited so that you can install it on a server or box you allow more than one user on, and you can edit parts of it to contact you for problems and things like that (You'll see what I mean)