About the Smashwords Book Marketing Guide: This guide provides authors and publishers practical advice on how to market their books. The ideas presented herein cost nothing to implement other than the investment of your time. In the last three years, tens of thousands of authors and publishers have improved their book marketing with the Smashwords Book Marketing Guide. Although the Smashwords Book Marketing Guide was originally written for the benefit of authors who publish and distribute their ebooks at Smashwords, the principles you’ll learn here are universal. Some of my tips require only a couple minutes of your time,.