I’m pleased to announce the final availability of my book about Kinect for Windows:
The summary is the following:
PART I KINECT AT A GLANCE
CHAPTER 1 A bit of background
CHAPTER 2 Who’s there?
PART II INTEGRATE KINECT IN YOUR APPLICATION
CHAPTER 3 Displaying Kinect data
CHAPTER 4 Recording and playing a Kinect session
PART III POSTURES AND GESTURES
CHAPTER 5 Capturing the context
CHAPTER 6 Algorithmic gestures and postures
CHAPTER 7 Templated gestures and postures
CHAPTER 8 Using gestures and postures in an application
PART IV CREATING A USER INTERFACE FOR KINECT
CHAPTER 9 You are the mouse!
CHAPTER 10 Controls for Kinect
CHAPTER 11 Creating augmented reality with Kinect
So if you want to discover how to use Kinect for Windows or how the Kinect Toolkit was built, feel free to grab your copy 
The book version:
http://www.amazon.com/Programming-Kinect-Windows-Software-Development/dp/0735666814/ref=tmm_pap_title_0?ie=UTF8&qid=1347907979&sr=8-2
The Kindle version:
http://www.amazon.com/Programming-KinectTM-Windows%C2%AE-Development-ebook/dp/B009AITHPC/ref=tmm_kin_title_0?ie=UTF8&qid=1347907979&sr=8-2