You can got your setting and go to edit your account. Either delete your account or change your password.
Also you can make a stronger security password.
I don't accept facebook emails. I only have it sent to me if it is someone that wants to add me as a friend. Everything else I can read it when I log in.
Clean out your friends and game buddys. You can hide or block people from anything pictures blogs or post on walls.
Hope you get what you need