These are just two of the writing sites that might be of interest.
You can subscribe to their posts and receive the latest in your in box.
Guide to Literary Agents. This site offers just about every type of advice to getting an agent. Plus they have webnars ~ like seminars~ that you can access for a small fee. It is invaluable if you want to land an agent or want to know how to write the definitive query letter.
Writer Unboxed This is a wordpress blog that has heaps of author interviews, helpful advice and general information on the art of fiction writing. Started by two writers it has become a must read for anyone serious enough to call themselves a writer.