The Sams books are generally pretty good, they have lots of examples so you get some hands on experience, adn they explain things pretty well. The for dummies books are really only good for the basics. I generally don't like them, but since you got it from the library and it didn't cost you anything, no big deal.

For more in depth material, consider getting a textbook from your local community college bookstore, or even taking some classes.

Also, there's tons of online tutorials and places like lonestar.org where you can get a free unix shell and just hack around learning unix commands and features and stuff.

Agent Johnson