You should be 13 to go on Facebook and you should'nt put your personal details online otherwise you could get hacked.online otherwise you could get hacked. If you get something on your computer and it says you can win something do not click on it because it probably hack your pc or you could get a virus. If you meet up with

someone online and they lie about how old they are

and they ask to meet up don't trust them because they could be a stranger and he/she could take you home.