These books are great resources for anyone interested in child psychology. To use them, simply start reading through the chapters at your own pace. You can take notes in a separate notebook to help you understand and remember key points. When handling the books, be gentle to avoid further damage to the covers and pages. Since the text blocks have some markings and slight damage, don't worry too much about adding your own notes. To maintain these books, store them in a dry and cool place. Avoid placing heavy objects on top of them to keep the binding tight. If you want to clean the covers, use a soft, dry cloth to gently wipe off any dust.