Every journey begins with a single step, and here you'll build your first "Hello World" style app. You'll see how to create user interfaces by utilizing the Toolbox and the special XAML designer pane. Furthermore, you'll handle an event and write C# to react to that event. Simple, but powerful ideas to get you started.
Full series source code: https://github.com/Windows-Readiness/AbsoluteBeginnersWin10