The kindle-author.blogspot.com blog put forth a set of promotion suggestions for self-published authors in November 2010. These tips, which come from ten different self-published authors in various genres, are worth repeating again this year.
Although there is no "magic bullet" tip that will make your book sell thousands of copies overnight, every book campaign can benefit from strategic promotion and careful social networking.
The list can be found at http://kindle-author.blogspot.com/2010/11/top-10-tips-for-promoting-your-book.html
Another good source of marketing tips for newly published authors is Social Media Examiner. Aimed at small businesses of any type, the site allows patrons to sign up for a free e-mail newsletter, which comes Monday-Saturday.
Social Media Examiner's tips address everything from the best ways to set up a LinkedIn profile to monetized Facebook applications. The site occasionally offers free e-books with additional promotion tips, too.
In September, Penny Sansevieri of Author Marketing Expert (another free e-mail newsletter) published a post called "Twenty Ways to Drive More Traffic to Your Website and Blog." It appeared in the Huffington Post.
Not too sure about things like Google Page Rank? Don't worry. Penny puts things in terms even non-technically oriented writers can understand.
Good luck, and happy promoting!