There must be a thousand books out in the world for parents right now. How to do this or that with your baby/toddler/child, OR How to get your baby/toddler/child to do this or that. From pregnancy through college there is a guide for every problem, or perceived problem, that you may possibly have.
How Children Learn, though, is not a guide. It is simply a demonstration, through the journal of John Holt, that children are smart and know how to learn, from the moment they are born. He shows that by giving children the space and freedom they need to explore things that interest them, we allow them to develop thinking skills. We allow them to figure the world out, learn that things work in certain ways, and that the world is generally a predictable and benevolent place. Holt shows through his experiences that not only do we not need to force children to learn, or to teach them much, but that teaching (and especially coersion) are counterproductive to learning.
It would be impossible to explain in a short space the thinking behind How Children Learn. By sharing his experiences, Holt shows us about children, not educational philosophies or theories. Get this book and read it. It will change the way that you think about children and learning forever.