Now that you have completed the Getting Started guides. You are ready to go. Consider reading the following guides as you learn more about the QuadFusion and its functionalities.
Duet3D G-code Wiki: All supported G-code commands
Duet Maestro Wiring: Explanation on just wiring the Duet Maestro Board.
Macros: Learn more about macro files and how they can make your life easier.
Repair Guides: The chapter that can fix all your problems (hopefully).
Maintenance Guides: Maintain the printer!