Here’s a video I made for Microsoft’s Flashcast series showing how to develop an iOS application using Visual Studio:
My colleague James did one for Android as well: http://flashcast.azurewebsites.net/stream/episode/5
Later this month we’ll have more Flashcasts, including one that shows how to use Xamarin’s iOS Designer for Visual Studio, and another on Xamarin.Forms. Keep an eye out for these, as well as other great topics at http://flashcast.azurewebsites.net