GNU/Linux: software center; install
Android/Linux: system app store; install
Windows/NTOS: web browser; maybe verify website url?, download, open, run as administrator, next, next, next, next, next, next, next, next, next, next, next, next, next, next, finish!
Alternatively, go on the Microsoft store and wonder why you have to pay for Krita
Memes, jokes and general humor about GNU+Linux
Rules:
Alternatively, go on the Microsoft store and wonder why you have to pay for Krita