Top 20 NuGet app-intro Packages

Xamarin.Android Binding for Ramotion's PaperOnboarding, a Material Design Slider http://ramotion.com
Xamarin.Android onboarding library
Xamarin.Android Bindings for Cuneyt Ayyildiz' Android Onboarder, a simple and lightweight library to create beautiful introduction screens for your Android apps.
Android Library that lights items for tutorials or walk-throughs etc.