A new (for me) Neil Gaiman book

My son got a new book from the library and I was thrilled to see it was by Neil Gaiman, one of my favorite authors, but also surprised, to my shame I've never heard about Fortunately, the Milk before. After he was done, he told me I have to read it because it has time travel; I did and I'm happy I did, it was indeed great. The best part is that it is the first book that exposes him to time travel - every time when we watched some time travel action in a movie, he told me he is very confused, I really want to have a talk with him to see if this book helped or not. Now heading online to get my own copy...