You can let them start reading educational books where they can learn about the different books for starters like books about senses, colors, sounds, alphabets, and numbers. There are a lot of books you can check in-store. Other books have built-in battery-operated books just by touching the drawings kids will be thought already by the supervision of an older person to them who can guide them with the book. Kids will already be motivated to participate when you used these battery-operated books.