Write Useful Books: A modern approach to designing & testing recommendable nonfiction

My first two nonfiction titles now generate approximately $160,000 per year in royalties and have been going strong for seven years. That's the natural result of how they were designed and tested. 

This guide contains everything I know about planning, writing, and refining useful nonfiction that is able to get recommended, endure for years, and grow on its own.

(PS. If you'd benefit from the support, accountability, encouragement, and events of an authors' community, check out https://gum.co/wub-community. It's $19 per month and includes this book, so you could technically unsubscribe within the first month and get the book at a discount if the community didn't end up being valuable to you.)