Can someone explain the Buddhist of child rearing from birth. Everybody is the parent for the first year or something like that?

Well Buddha walks 7 steps during his mother gave birth to His Holiness but sure you don't want your child to walk in operation room with nurses screaming . The most imprtant is to give pregenant mom more BUddhism songs and Dhamma. So your baby wisdom and virtue to this world will be a great human being in his or her life.