Have you checked out Goodreads yet? Do you have an Author's Page there? Is it linked to your blog?
Uhmm, why not?
Goodreads is a great place to start your marketing and begin building your fanbase. You can let readers know about your ebook even before you publish it.
First you'll want to learn about Goodreads, so you don't inadvertently alienate your readers. Indie writer Karen Johnson has a post Why Use Goodreads? at the Indie Book Collective blog.
Read Karen's post, then head over to Goodreads and get started on that Author's Page.