How Did the First Parents Know How to Take Care of Their Children?

An anonymous Yahoo answers user asks, how did the first parents know how to take care of their children? Books, internet, other parents that have been doing it. Songs, nursery rhymes. Old books, old books that are kind of more like what not to do. I bet there was a lot of like angels showing up that first time around. There were a few babies before. God was just like, no, don't get it. They'll get it. Just calm down. All right. Get down there.