I created images that were used as adds of various sizes on her website, on blogs and on her social media. These ads linked up to a Wix free landing page created that was linked into an email program. The download of the book was available behind an email gate.
This Landing Page was built in Wix as the client required a very low cost alternative to Lead Pages or Click Funnels. At that time, Elementor was not available to place on her website. Today I would place the free Elementor plugin on her site and use that.