Where you create a page about yourself then connect with your friends and family to share things in your life with them.
What is…
A status: tell friends what you’re doing, thinking, feeling, watching or even eating.
A “DM”: A private chat service – a bit like texting. You can share photos and videos privately here too.
Checking in: Showing off the places you have visited… most popular? The airport.
Tagging: When you say your Facebook friends are with you.. for example at that airport, or in a photo, the post is shared with their friends too.
[Source:-Eagle]