Once again some similarities to the Createspace/KDP process of choosing categories, but it appears that there is no limit to how many categories and subcategories you can choose, which is great because you are limited with KDP.
Also some significant differences in the form of selecting BISAC codes, Regional and Thema Subjects, but nothing to be scared of!
You can also include your audience, table of contents, Review Quotes, and Photographs and Illustrations.
Very informative!