This book would be great for a child up to 18 months. The words are very simple (only one word per page). My son was a little bored with the book because he is 20 months.

I got this book for my daughter when she was about 18 months old, and she loved it. Each page has an engaging drawing and a simple sentence about what friends do together (e.g., laugh, sing, play, share). My daughter especially enjoyed doing the sound effects written on each page (e.g., "hahaha", "lalala", and so on), and we would talk about friends in her life that she had done these various fun things with. It was a very nice book to read together, very interactive.