My wife's aunt purchased a subscription to Reader's Digest for us this Christmas, and while I don't pay much attention to it when it arrives, the April 2011 has an excellent article titled: Get Hired, Not Fired: 50 Secrets Your HR Person Won't Tell You.
It has a good number of tips that I have seen in various other articles and books in the past, and some new ones that take into account the current state of technology.
A brief visit to the RD webpage and search will also score you several digital articles that discuss other aspects of the job, such as key indicators you are about to be fired, and secrets about your resume that a HR professional might keep from you.
Check them out.
What Your HR Person Won't Tell You.