Questions about static cameras

[[501]Otto]

Just a couple of questions:
1- I know how to set a static camera, but how can I make it to follow a single airplane/unit?
2- I´ve seen some movies in which a camera "rotates" around a plane with smooth movements...is there a way to achieve it without the "normal" shakes made when you move the mouse? (I know, I must quit drinking so much coffee )

And last but not least...can anyone recommend me a video editor (a free one, please) that adds some scratches to the movie, making it looks like an old film? I just have windows movie maker
Thanks:
Otto