I have a Linux+ study guide that has a neat "lab" in one of the appendices (sp?)... basically one of the was like: create a user, add him/her to whatever group, etc. At the bottom (if you get stuck) it tells you how to do it. Anyway, I found it an invaluable learning tool, as I'm real bad at memorizing stuff

So I could work on my Linux box with the practice lab and actually learn how to do stuff rather than just read chapter after chapter

Anyway, I have been looking for something similar all over the place for additional practice and haven't found anything. Any ideas on where to look?