Root: A (Brief) Introduction

A newbie friend of mine said the following article was helpful in understanding the concepts of root and multi-user operating systems, so I figured I post it here:
http://www.iodynamics.com/education/root101.html

Looks like there are a few other articles and such on that site that might be useful, but I only got around to reading the one on root. Seemed pretty good to me.

Good find! There are some good links at the bottom of the article:
A good tutorial site -- http://www.ctssn.com/ May be this should be added to the New to Linux Sticky.

I'd hope that anyone who has used Win2k or XP would be at least a little familiar with the difference. the Administrator account=root, all other useser=other multi-users.