I was researching topics in women's fiction and stumbled across this blog by literary agent Scott Eagan. There were informative posts about writing a good query letter and other "business of writing posts." At the moment I don't have an agent and am not looking for one for my first project. It is currently sitting in slush or being pulled out of it. However, going forward as a long term professional writer, I think an agent would likely be worth every penny. Here's the link to his blog: Scott Eagan-Greyhaus Literary Agent Blog