I discovered this book in the library with my first child. He was about two years old, and this was his favorite book. I must have read it to him at least ten times a day. He is now six, and has a baby brother who has discovered books too. I decided we needed a copy for him, and ordered. The book has very simple, easy to read words and concepts like "big trucks and small trucks", with lots of colorful pictures. It's an easy first reader. Joshua James Likes trucks- and so do my boys.