An example of Person vs Person is when Mrs.Caroline makes scout feel guilty about being educated and knowing how to read. From this day forward Mrs.Caroline and scout do not get along.
An example of Person vs Nature is when Mrs. Maudies house caught on fire, this is person vs nature because someone must have started the fire
An example of Person vs Society is when Atticus stands up against society. The Maycomb society doesnt like black men or women so when Atticus agrees to defend tom robinson a black male he stands up against society.