A few questions

I have been using blender for about 3 months now and I have a few questions about the game engine.

I have done the counting tutorial on the blender website, when I save the game as a runtime the counting system does not save, same thing happens in texture mode.

Camera Views: How can I set up a switch between first and third person?

How do I limit how far an object can rotate? For example if I were to make a car and I want the wheels to turn to the maximum of 60 degrees how would it be done?

cameras: Camera actuator
rotation: use IPO animation with the IPO-actuator