When you have a facebook or something one good thing to have is a strong password. When you make a password you want to add letters and numbers so no one can have a easy pass to get into your acount. Also don't tell anyone your password.
you want to keep all of your stuff to your self. you don't want someone to have your securit numbers or your credit card numbers. if someone has that they can charge what they want to your cards also online if they get your password they can charge what they want to your acount