There are three facets of book publishing: writing the book, producing the book, and promoting the book. This final step of marketing is one that most authors would just as soon skip. But if people are to read what we write, we must promote our work.
Here are some articles about marketing to help with the task of book promotion. Though these offer generic marketing instructions, the principles are applicable to authors and publishers. As you read them, think about your book as a business.
This list is just a start, but it will help us to just that: get started.