Trail and error, search similar topics. It's unfair to ask someone to write your game for you. If you don't understand then i suggest going to through the wiki. I know it can all seem daunting at first, but trust me, it's the best way. This topic is well versed in the forum, and i'd be very surprised there wasn't a template already made. C'mon dude, you'll rock when you figure it out! Good Luck!
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However, if you wanted the car to follow your finger, you could use the Move To Behavior. The X and Y would be game.Touch1.X and game.Touch1.Y
For the rotation, use Rotate To Angle.
And to get that angle, use VectorToAngle(game.Touch1.X-self.Position.X,game.Touch1.Y-self.Position.Y)
That's just off the top of my head though, and I haven't tested it, but something like that should work.