Complex engine managment help

[Rattlehead]

I have tried CEM and so far nothing has blown up.

I have a couple of questions though:

1) First time around, I did everything by the book (I hope) but for some reason my plane didn't really go anywhere, even with the throttle wide open.
(My brakes were disengaged.)
I shut down the engine and tried again, and this time it took off okay. Any reason why I could not take off the first time?

2) After a few minutes of flight, I got oil all over my windshield. What did I do wrong?

3) What is a magneto and what does it do?

4) Can I fly with my radiator open all the time? I can understand in freezing weather the need to close it, but what about in warm conditions? What about the oil radiator?

5) At one point, my engine went past it's redline. It seemed okay, but obviously this isn't good long term. Can I dogfight with the engine past redline?

6) I also picked up a terrible vibration in the plane that didn't go away. What did I do wrong?

Thanks for any feedback.