OK, I'll bite -- since you said you couldn't find ANYTHING. Lets start with something simple: What does the first law of thermodynamic state? What would happen if that statement were false? What sort of things depend on it being true? And lets see if we can pull a topic together.
P.S. A little tip for High School students everywhere. You can never, ever, not find anything, on any topic. Ever. You can always find something. You may not understand it, or see how it pertains to your needs. But you can always find something.