Seems with the loss of 5 billion or so in wall street value Facebook has finally found a reason to start taking some of its end users privacy concerns seriously.
Starting with a simplified interface you can now go into the depths of Facebook land and change “some” of the things you are shown while on their website.
If you are a long time user you may wish to plan some “away” time to wade through the hundreds if not thousands of categories that have been connected to your account and I would definitely suggest that you expand the settings to view to find all the ways the big “F” has been tracking you.
But if you take the time and go back once in awhile to review what new things they have learned about you delete them. You can keep what they know about you to a minimum.
Of course if you don’t have a reason to share everything with everybody on the planet you can also change the settings so that only your friends can see what you post.
At any rate it might be fun to see how much Facebook as learned about you.
(or not).
You can review and change your Facebook Ad privacy settings here..
https://www.facebook.com/ads/preferences