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.
Marketing & publishing resource
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.
The design of your book's cover and text is critical to its perception by readers as a quality book. Such design, if done correctly, will require a significant investment, but it is a one-time cost that will pay off handsomely in terms of sales and your reputation as an author/publisher.
Given the considerable frustrations of working with commercial publishers, you may well consider self-publishing your book.
Displaying your book on Google Book Search is an excellent way to enable potential customers to browse your book online and buy it.