Don't assume that it's too hot. Yeah, they all get very hot. You'll burn your hand if you touch it just about anywhere.

All the advice about how to deal with a too hot engine is good. Excellent as a matter of fact. But if you're new as you say you are, there is a fair probability your engine wasn't too hot. If it had been, it probably would not have run very long.

The best way to tell is to look at the exhaust. If there is some "smoke", your needle valve is set rich enough. The smoke actually is excess, unburned fuel (mostly oil) that is supposed to be taking heat out of the engine so it doesn't get too hot. If you don't see any at all, richen up the needle setting or you will see the results of too hot running and THEN you will need all the advice given so far.