I am in the middle of Penguin’s Author’s Guide to Marketing. http://us.penguingroup.com/static/pdf/misc/penguin_authors_guide_to_online_marketing_summer_2008.pdf
Here is the meat I got from it so far:
1. You need a web presence preferably before you release your book. (check!)
2. You can advertize your book on Craigslist.
3. You can place yourself on Wikipedia (Cool/Intimidating!)
Also, some techie advice from my techie husband: You can’t use the same information on all your submissions and profiles or you will be marked online and disqualified from notice. You can re-use your stuff but don’t make it just the same. Profile info should be a bit different for each profile unless they specifically ask that it be the same as your book. If you’re blogging, refer to one blog in the other, but don’t copy wword-for-word. Summarize and link to the original. Shoot, I have some work to do now.