Getting Started with Metro Style Apps book is available for Early Release
As many of my friends know I’ve been working hard on a new book for O’Reilly called Getting Started with Metro Style Apps. This book is written for existing .NET developers who are interested in the changes introduced with the release of Windows 8. This book is intended to be a guide to developing complete Metro style apps end-to-end. If you have an idea or you are just curious about the platform, this is the place to start.