So I only made it an additional purchase because it is yet another new-baby-arriving-in-the-family book, and I guess you really only need so many of those, but if you’re not overloaded already, and are looking for another title along these lines, this is a good one.  I almost gave it a full-fledged recommendation.  Most of the book is dedicated to a little brother telling about all the things his big brother can do.  Along the way he refers to a secret they share, and in the end it turns out that the little brother becomes a big brother.