Successful authors need a product funnel for their books. Simply put,
a product funnel is a group of products and services, related to your
book topic, that readers could purchase from you after they've read
your book. All the most successful non-fiction authors have a product
funnel. Consider Wayne Dyer's audio programs, Debbie Ford's coach
training services, and all the other authors you know who do workshops,
teleclasses, calendars, card decks, cruises, and a myriad of other
offerings.