Let's talk about the benefits to families from game play. And as to learning, let's look at courtesy and etiquette, and at responsibility (page 155 in the book).
There's not a straight webpage link. If you want to read more than those pages in the book, this on Minecraft might be fun for you. It's about Minecraft bringing families closer together: http://sandradodd.com/videogames/minecraft
If you're reading this by e-mail and you need a path to the chatroom, click on the title to get to the blog, which has a tab up to the left with the link and password.