Fact 1: Keep your password to your self. Because you don't want people getting into your account.
Fact 2: Don't meet up with anyone offline. Because it could be a weird person trying to kidnap you.
Fact 3: Don't post personal stuff. Because like on Facebook, Twitter, Instagram its a public thing, and people might be watching you.
Fact 4: Don't add people you don't know. Like on Facebook, Instagram, Snapchat.
Fact 5: Think about what you click. Because it could be like a fake thing.