1. Don't talk to people you don't know. Because you don't know who they really are and what they can do.
2. Don't tell people to much about you. Because people can see what you are doing and they can track you down.
3. Don't tell anyone your password. They can post something about you that isn't true.
4. Make sure you are private. So no one can hack into your account and find information about you.
5. Don't be rude on the internet. If you are rude it hurts people on the other side and it may not be true.