As a new dad, S.M. Gross didn't know much about raising kids and didn't have a strong support group. He found the information available from books, websites, blogs, videos, etc., to be too dense, overwhelming, and not simple enough for today's needs. Through countless conversations with those who know best?moms, dads, nurses, doctors, nannies, and more?he distilled caring for a baby down to the essentials. He realized that if he had this challenge, other new parents must too. And that's where the idea for the Simplest books came from, to share this collective knowledge in a way that new parents can get the solutions they need quickly and easily. The third book in the series, after bestsellers The Simplest Pregnancy Book in the World and The Simplest Baby Book in the World, he provides actionable information to tackle the progressive next topic of childrearing?potty training.