Learn about Flutter - A revolutionary approach to building native apps from Google. There is also content regarding Dart here.
Tutorials:
Flutter - Portrait and Landscape Layouts
Flutter - Saving and Restoring with SharedPreferences
A Fluent Validation Library for Dart and Flutter
Flutter - implementing swipe to delete
Flutter - how to implement pull to refresh a list
A Flutter App that populates a list via HTTP
Flutter: Building a Widget with StreamBuilder
Flutter - How to Build a Modal Progress Indicator
Flutter Navigation - Named Routes
Flutter Navigation - How to Prevent Navigation