Using this water doodle book is super easy. First, fill the water pen with water. Then, start coloring within the lines of the pet - themed illustrations. As you color, the pictures will come alive with different colors. This is a great way for kids to learn words and colors. For safety, make sure kids don't put the water pen in their mouths. After use, let the book dry naturally. You can keep it in a dry place to prevent any damage. With proper care, this water doodle book can provide hours of fun and learning for your child.