Many of the following websites were useful as I began my writing career. I hope you find them helpful too.
Writers Net: http://www.writers.net/forum/
Absolute Write: http://www.absolutewrite.com/forums/
Verla Kay’s Website for Children’s Writers & Illustrators:http://www.verlakay.com/boards/index.php
Galley Cat: http://www.mediabistro.com/galleycat/
Evil Editor: http://evileditor.blogspot.com/
Nathan Bransford: http://nathanbransford.blogspot.com/
Kristen Nelson: http://nelsonagency.com/pub-rants/