When making friends, consider putting them into groups. You might organize them around privacy (those who know about my family and those that do not) or people who know each other. People can belong to more than one group if you want.
Think about what kind of friends they are. Family? Co-worker? Church? School? Acquaintances?
Do they know about your family? Do you want them to know about your family?
Consider putting your friends into groups. This makes subsequent control of your information easier.