One of the primary ways you can increase book sales is to build a database of people who want to hear from you and then regularly communicate with them.
To do this, you need a mechanism where they can sign up to be on your emailing list and then a consistent stay in touch mechanism like an eNewsletter or ezine. It is important to decide with what frequency will you be communicating and then stick with a schedule – will it be weekly, every other week, or once a month?
You can use technology to help you do this, with something like www.ConstantContact.com which is a service which helps you collect and organize your database, and also assists you in creating professional eNewsletters and other communications.
Another great way to stay in touch is by setting up autoresponder communications that sends emails at regular intervals after a purchase or other interaction with your web site.
In order to keep your mailing list clean and be sure you aren’t considered spam by Internet Service Providers, it is important to make sure people “opt in” to your emails. To make doubly sure, you might consider a double opt-n process, where users get an email when they register for something on your site that asks them to respond if they really want to be on your mailing list.