The Zen habits blog is full of great advice. For those of you who might want to start running, or used to run but haven’t run in awhile, I strongly recommend you look at this: Beginner’s Guide to Running | zen habits
There’s lots of great tips there.
One site they didn’t mention is Hal Higdon‘s web site. It is PACKED with good advice. You can buy lots of magazines and books on running. Or you can save your money for better shoes and use these sites instead.