There are many active organizations and discussion groups and useful newsletters to help you with your writing, marketing and publishing. Here's a list:
Marketing & publishing resource
Taking full advantage of opportunities to market your book on Amazon is an absolute no-brainer, given that they cost nothing and are easy to do.
People are much more likely to buy your book if they feel a connection with you and see you as an expert willing to share your knowledge. A blog is a perfect way to establish such a connection.
If you do not feel comfortable taking on the tasks of managing production of your book -- for example, hiring and supervising an editor, designer, indexer, printer, etc. -- consider using a book packager or consultant.
While POD is the best way to produce small quantities of a book, offset printing yields by far the greatest economy of scale and can produce a more professional-looking product.
You will encounter a great many unfamiliar terms in marketing and publishing. Here is a useful guide.
Whether you go with a commercial publisher or self-publish, you must commit yourself to marketing your book to make it a success.
A quality website is your professional face to the world, and fortunately it takes relatively little money and effort to put on a good face.
The savvy use of print-on-demand technology can lead to successful self-publishing.