In this blog post tutorial I will do simple MVVM binding in Xamarin.Forms. For this tutorial I will use Visual Studio 2017 RC.
My idea is to make a simple app "MyName" with one entry (input text), label and button. In entry control user will input their name and after it clicks on button using MVVM pattern label will become populated with new text with no code behind.
Full Blog post with tutorial is here: http://almirvuk.blogspot.com/2016/12/xamarinforms-simple-mvvm-binding-example.html
And I hope that this will be helpful for you.