I just came across Douglas Chick's book, "What All Network Administrators Know". I immediately rushed to add it to our web page of recommended titles (scroll to the bottom).
One of the problems with TPOSANA is that it really focuses on big sites. This book is perfect for sysadmins that are just getting started or are at a small site. It is down to earth, very practical, and contains tons of excellent advice. (If you want proof, preview it on Amazon by clicking on the "random page" button.)
http://www.amazon.com/What-All-Network-Administrators-Know/dp/0974463000 is the link for the book -- I clicked through the link in the post and I don't see the book linked. :(