Choosing the right Amazon categories for your book can greatly increase your visibility in the Kindle Store, making your work more likely to be discovered, purchased, and recommended.

But if you make bad decisions here – or opt to do nothing at all – you can limit your book’s success in surprising ways. Sometimes you can even nudge Amazon towards recommend your book to all the wrong people! Which invariably fails, of course, and causes Amazon to think you have written a dud. Meaning Amazon is le...