When someone sends you a friend request...

On the home page a Notifications tab should appear with a red number and picture of a bell.  Click on this tab to show your new notifications.

To approve connection with your new friend, click on the Approve icon on the left.  To reject the friend request click on the Remove icon on the right.

Approving a Friend Request earns you 5 User Points!  Rejecting a Friend Request, however, deducts one User Point.