Jabber, a lot of new authors don't realize that the most important part of becoming a successful author is the promotion that comes after the book is published.

One thing you can do is write articles, for a variety of websites that accept article submissions from others. And then promote the book in your signature file. For example, NABBW offers the opportunity to write one article a month for us. Which we will publish on the NABBW site. We publish the articles on the front page of the NABBW.com website, and you can have a link to your book on Amazon, etc., in your signature file.

Another thing, of course, is doing book signings at local/regional book stores.

I'm sure a Google search will turn up some other good ideas.