Leo's Mom wants to do something that many users probably want to do -- see other Facebook accounts without being public themselves. Facebook hides the ability to do this, and the default when creating an account is to be public. Here's how to make an account that's as private as possible:
Create a Facebook page that has no information in it, not even a photo. It may even be a good idea to lie about your age and say you're 100 years old.
Next, go into the Facebook account settings > Privacy. There are a couple of categories with a few options under each.