As promised, here are the links a couple of handy things I mentioned at last nights meetup.
MvvmCross has several ways to do databinding (fluent, swiss, tibet etc) and it's databinding documentation is invaluable. It also has examples of how to use some of its built-in features to do many common tasks that would require a valueconverter in WPF, like concatenation (LastName + ", " + FirstName) or arithmetic.
For using iOS's autolayout, I am fond of Stuart's FluentLayout library. I believe FluentLayout is standalone and not dependent on anything in MvvmCross, so it could be useful for any of you not using Mvx for your Xamarin iOS development.
Hope some of you find these links useful.
-Jarrod