The introduction of digital has reshaped the way we market books. In 2005 I self-published the international best seller Bricks to Bridges and invested $100,000 in marketing the book across three continents. In 2017 I published Excellence in Execution with Morgan James and invested $20,000 in marketing. Will I have five times less impact? Of course not, because it has never been easier to promote your book for less. In 2005 the internet was just in its infancy. To date I have sold over 41,000 books. Heres how.