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

Founded which 3d software should i learn for 3d printing models & stl files for printing
Fuzzybot
FuzzyNoodle
Stitch Cookie Cutter
morganakuhnen
Robohand
robohand
Shock Absorber
Flexbot
Diamond
Sweven_3D
Egypt King Tut
quangdo1700