Red Pill Xamarin is a tutorial series for building cross-platform applications in Visual Studio, making use of the Xamarin platform.  This allows you to build apps in XAML/C# with a single code base that runs on Windows, iOS, Android and now Samsung’s Tisen OS for wearables and appliances.

If you have comments or questions that specifically pertain to posts here please ask them.

If you have questions about Xamarin in general, coding concepts etc., those are best asked on an active forum site such as the Xamarin Forum or DreamInCode.net