So erasing the first sentence, you hand in an essay with the intro: "Best of luck. I hope you find the god damn thing, and smite it.<<< Probably erase the first part, but still. Good writing advice (For those who get the reference)
It's probably one of the first things newbies are taught. Salt is your friend, don't make deals with demons, you decapitate vampires instead of staking them, and don't touch Dean Winchester's little brother.