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

Founded which 3d software should i learn for 3d printing models & stl files for printing
Tricidyclon Sigma
BobGreatE
Blank Board Game Piece
TimsterPostma
Hawaiian pencil sling
TimsterPostma
Support legs
Taskino
Terminatort800 bust
SzonyiBalazs
The Dreaded Rat bust
keta-minies
Deep wrinkles
Gwex Studio
Ouch !
Gwex Studio
King of cuteness
Gwex Studio
Low Poly Decoy Wasp Nest
WildRoseBuilds