A friend of mine, Joachim Rossberg, recently completed his work with a new book on Team System and ALM. As far as I know this is the first VSTS book with focus on ALM and how to optimize processes using Team System.
The book covers ALM at a general level but also maps it well to how Visual Studio Team System can support the ideas of ALM. There's also some nice discussions of ALM practices and how to perform ALM assessments.
Find more info on the book here: