How do I follow someone? And how do I allow someone to follow me?
You can follow someone by finding them in your contacts, through Facebook, or through the suggestions in your feed. If that person's profile is set to private, they will need to accept your request to follow them.
If your profile is set to private, you will need to approve any requests you receive from people who wish to follow you. For more information on account privacy, you can read this article.
You can remove a follower by navigating to the list of your followers from underneath your name in the My Profile tab. Select the three dots to the right of the person's name and remove them. The person will not be notified of this action.