which 3d software should i learn for 3d printing —

Founded which 3d software should i learn for 3d printing models & stl files for printing
A Shelf
lyMaker
Forky Toy Story
Dream-it_Model-it
3D Grid Trophy
3Designer
LED lamp outshell
3Dprintingmaker
The Butcher
StoneAxe Miniatures
Gir Coaster
Bahgera
4 Axis Robotic Arm  M01
TheSupeSewcio
Simple lock
Haridon