Plz only those how know the answer answer my question?

[Faith]

You should make your profile private only to your friends to do that. HOWEVER, you can make you facebook available to subscribers which means subscribers can only see pictures and posts that you made public. Like when you update status, you will either see a globe or two human silhouette icon on the bottom. When it's public the globe icon appears and when it can only be seen by your friends the two human icon appears. I think you can find it in Privacy Settings. Just take time browsing everything on the Settings so you'll get more protected from hackers and strangers on facebook. Good Luck!