Quoting the Sunday Times, 17/10/10 (Let kindle fire up your inner author).
Re marketing:-
Start by creating a profile for yourself on Author Central, a place on Amazon's site where author's provide information about themselves. Next it's time to get blogging to build a 'buzz'.
Pat
<Added>Just found this:-
But you can do better than that. If you write interesting posts about Kindle, then Google will send Kindle owners to your blog to read your posts (and the promotion for your book). More info on
http://blog.tomevslin.com/2009/02/kindle-for-authors.html#