The first three screens cover the profile information you’ve given to Facebook, how it attempts to match ads to your perceived interests, and its use of facial-recognition software. A “Manage Data Settings” button below each allows you to adjust those options. A fourth covers its terms of service.
The profile-information part represents your shot at being a little more mysterious by removing data you’ve provided—for example, maybe you no longer want to advertise your political leanings on Facebook. Pay particular information to such profile data points as your hometown that could be used to answer security questions for accounts at other sites.