<human>:  How to manage privacy settings on facebook?
<bot>: Manage Facebook Privacy Settings
1. Tap the menu and select Settings & Privacy.
2. Tap Settings.
3. Tap Privacy Settings.
4. Adjust your posting privacy.
5. Control who can find or contact you.
6. Tap Timeline & Tagging to update who can see your timeline.
7. Change your tagging preferences.
8. Set your ad preferences.