Rafael Moura is a Xamarin MVP who develops native iOS, Android and Windows user interfaces with shared C# code using Xamarin.Forms. Xamarin allows developing mobile apps using C# and leverages shared code and libraries across platforms. It supports over 2.6 billion devices and uses Visual Studio, Xamarin Studio, portable class libraries and more. Xamarin.Forms provides over 40 reusable UI elements and features like data binding, navigation and animations to build mobile apps with shared code and native UIs. Resources for learning Xamarin include documentation, books, sample code repositories and contacting Rafael directly.