There are many products you can use to promote your services, including:

Books. If there's any product that can take years to create, and at great expense, it's this one. Cut your time in half by tracking down a co-author.

E-books. Electronic books are an ideal product for partnering. My friend Tom Antion, a professional speaker, invited me to partner with him on an e-book about publicity. I wrote most of the book titled "How to be a Kick-Butt Publicity Hound." Because his ezine list is well over 100,000, I rely on him to do most of the marketing.

Tips booklets. Either co-author a booklet, or track down a product partner who can write a booklet that would be a good companion to one you are thinking of creating. Publishing two or more booklets on the same topic can prove profitable because some buyers will want the entire set. For more information on how to write and market tips booklets, check out Paulette Ensign's excellent web site at www.tipsbooklets.com.
For even more ideas, see Special Report #41.