Anto has gone through the Flutter repo step by step and recreated the Flutter dev layouts. It will be helpful to trace his path if you are new to this.
Flutter’s on tutorials to get started
FreeCodeCamp’s tutorial.
Rahul Mahesh has done a documentation of Dart language here: https://rahulmahesh62.github.io/Dart-Documentation/
Walks you through the Flutter ecosystem
Check out: https://itsallwidgets.com/
The folowing articles were written by mukhtharcm
Firebase Setup for Flutter Android App
Creating an Autoupdating ListView from Firebase Firestore
Different types of Snapshots in Flutter
Flutter Navigation basics Using GetX
Getting started with Flutter Web
for more of these guides, visit https://mukhtharcm.com