While on the road, I noticed my car leaking out its coolant from the bottom of my car. As I was driving to the nearest gas station, my engine started over heating so I stopped and waited for it to cool down. After it cooled, I started my car but it started making unusual sounds and then shuts off now it won't start anymore. It tries to turn over, but just won't start. What could be the problem? Where should I begin looking to repair this problem?