The great thing about a Web site is you can always add to it. Here are some basic elements you'll want to consider adding to your site:
Content. Nobody will visit a site that's merely an advertisement for your book. Your content can be a series of articles, book excerpts, or even feedback from your readers.
Book cover artwork, description, and excerpts.
Your biography.
Links to purchase your book, either on your site or online retailers such as Amazon and Barnes & Noble. The more choices you offer buyers, the better.
Reviews of your book.
A form where visitors can enter their e-mail address to subscribe to a newsletter or site updates.
Contact information--your e-mail address (or a form that forwards messages) and perhaps postal address and phone number.
A "media room" with any press releases announcing your book or any news coverage involving you or your book.
Suggested interview questions, along with your responses.