If you're an app developer who wants to design and build Windows Phone 8.1 apps using XAML and C#, check out this course, taught by experts who have years of experience developing (and writing about the process). The sessions focus on how to create apps for Windows Phone 8.1 in Visual Studio and how to create universal app projects that share a high percentage of code and that target both Windows and Windows Phone.

Get tips and tricks on maximizing your app compatibility and optimizing your code. Find out about new features, and learn how to program the many new Windows Runtime APIs that are available to both Windows Store apps and to Windows Silverlight apps. You can even get code samples. Watch now to make your apps world-ready!

Source for all the demos can be found here.