I bought this book for my 16 month old son. He loves The Sesame Street Word book and thought this would be a good addition to his collection. He likes it okay, but still prefers the Word Book hands down. It starts with the alphabet devoting one to two pages per letter. Each page(s) has the letter and pictures of things starting with the letter. It also has the word naming the picture. I agree with other reviewers..some letters were not depicted very well compared to others. The second half covers numbers 1-20 then skip counts by tens numbers 20-100. All are done with pictures. If you had one book to buy I'd get The Sesame Street Word Book. However if you want to add to other educational books you have, this is a great purchase.