The question is "How do you land an airplane?" First of all, the chances of you being asked to land an airliner are zero, zip. It only happens in Hollywood. I would need to write a full sized novel to tell you how to land a commecial airliner. We will therefore limit this discussion to small, private aircraft.
So there you are staring out the window as the pilot finishes off that three day old turkey sandwich and keels over. What do you do?