Xamarin.Forms 101: Design Time Data https://channel9.msdn.com/Shows/XamarinShow/XamarinForms-101-Design-Time-Data

Awesome Xamarin Forms properties that you probably didn’t know about
https://xamgirl.com/awesome-xamarin-forms-properties-that-you-probably-didnt-know-about/

Implement CI/CD with AppCenter
https://www.c-sharpcorner.com/article/xamarin-forms-implement-cicd-using-app-center/

Header, footer and grouped information in our ListViews
https://askxammy.com/header-footer-and-grouped-information-in-our-listviews-in-xamarin-forms/

Testing Dark Mode on your Xamarin Native or Forms iOS App
https://medium.com/@prototypemakers/testing-dark-mode-on-your-xamarin-native-or-forms-ios-app-91e4f191614b