Centering the bed or setting the bed origin
Defining tool and Z-probe offsets
Orthogonal axis compensation with M556
Setting up to resume a print after a power failure or planned power down
Calibrating a delta printer
Filaments
Slicing recommendations
See this forum thread for Tuning Macros Menus (Acceleration, Jerk, Retraction, Pressure Advance)
Pressure advance
Input shaping
Tuning the Duet 3 Expansion 1HCL
Setting up macro files for common tasks
Macros
Multiple tools and Tool change macros
Using triggers to control the Duet