If you find a web page that you think would be useful to other students in the class, send me mail and I'll add a link here.
download via ftp
This book focuses on how to use Unix rather than on how to program it. It goes into much more detail than the course text and at roughly 900 pages you would hope that it would. Generally, it seems quite readable and sensible.
I quite like the Visual QuickStart Guides from Peachpit Press. They feature step-by-step instructions for how to do many things. This book is aimed at the beginning Unix user. The authors do a good job of explaining the reasons behind the steps that they give you.
Stevens books are fantastic references for programming in Unix. They geared more at someone already familiar with Unix, but are very readable.
If you are ever going to buy a book on network programming, this is the one to buy.