Build a List view report from the context of Books-Persons.
Place a sub summary part on the layout, sorted by Books-Persons::Name.
Place another sub summary below it, sorted by Books-Persons::Category.
Delete the Body part.
Place the Name field in the Name sub summary, and the Category field in the Category sub summary.
Sort the records by Books-Persons::Name, and then by Books-Persons::Category.