You may ask yourself, "How in the world do I know how to choose a book for either your child or a child you may know?". Well here is a awesome link that gives you guidelines to consider what kind of books are best for infants and toddlers, preschool and kindergarten, early school years (5-8), and then older children (9 & up). I hope this helps some parents out there, enjoy! :)
http://www.readingrockets.org/article/62/