A true picture book is mostly illustrations with little or no text.
Many picture books tell a story.
Picture books can used to teach reading to young readers and people who are learning another language. Many student writers like to use the writing structure of these books to help them write their own books. Since the story is usually simple, it can be used as a model to develop a student writer's own ideas. Many picture books are enjoyed by children and adults alike. They are often read over and over again because they are so much fun.