No, it sounds like you handled the book and screaming situation great. You have to pick your battles. At that age it is more about limits...when they get a little older you can work on tone of voice ; ) When they get older they can understand the concept of "I don't answer you unless you speak in an appropriate tone" (ie: don't scream at me, don't call names and make demands, don't whine about it, etc.) At a younger age that is kind of hard to get and hard for them to control as well.