Chapter 1 takes us through the basics - the WinJS equivalent of "Hello World", the core features of the standard "Blank Application" template provided by Visual Studio, and editing and debugging. It also sets the stage for the rest of the chapters by outlining the application that will be developed throughout the rest of the book.
Chapter 2 introduces the first meat - data and binding. These concepts are a required foundation for building applications. After all, can you think of an application that doesn't use data? I also like the introduction of the View Model concept and observable data - I have done a lot with the MVVM pattern in WPF and SL, and appreciate the introduction of the pattern in this book.
Chapter 3 introduces us to some of the Windows 8 controls such as the AppBar, Flyouts, and pages. It also demonstrates how external content can be brought into you application.
Chapter 4 brings us up to speed on layouts as well as construction of application specific tiles. A big part of the Windows 8 user interface is being able to react to not only changes in orientation, but support of snapping an application into the side of the screen. In fact, it's a requirement for the Windows Store application process to respond appropriately to orientation changes as well as snap/fill formats.
A big part of the Windows 8 user interface (introduced in Windows Phone 7, and previously referred to as "Metro") is the tile system. Tiles that are "live" are more compelling to users, and Mr. Freeman does a great job of demonstrating the making tiles come to life as well as adding badges to the tiles.
Chapter 5, the concluding chapter, teaches us simple methods to deal with application suspension, termination, and activation as well as incorporating the Windows 8 Search Contract into your application.
I only have two negatives - and they are small. 1) This book was built using the Consumer Preview edition of Windows 8. The author does a great job pointing out where there are issues in the consumer preview and provides workarounds for those issues, but now that Windows 8 is GA, those issues and workarounds create some noise that I'm sure will be cleaned up in the next edition. I understand and relate to the difficulty of writing about brand new technology, and like I said, it's a minor complaint. 2) Due in large part to trying to keep the book compact and concise, sometimes the code listings show code that hasn't been talked about yet. Again, a minor issue, but as someone who follows along by typing in all of the examples (I find that a great way to retain the code concepts), it was sometimes frustrating to have some of the code talked about before the listing and some of it after the listing.