http://www.Writing-World.com
The site is a little "busy" for my taste, but the e-newsletter is pretty good and gives you info on "writing jobs/opportunities." Subscribe to it by clicking "FREE NEWSLETTER" in the top right corner of the page.
http://parapublishing.com/sites/para/
Dan Poynter is the guru of self-publishing. I highly recommend buying the two books on his homepage, "Nonfiction Writing" and "Self-Publishing Manual." Be sure to sign up for the Publishing Poynters electronic newsletter. (See left column of page.)
http://www.absolutewrite.com/forums/
A wonderful forum for writers. I was active on this one several years ago and then got too busy with work/life to keep up with it.