What is a thing/skill you can learn /easy/fast and get a good payment for

What is a thing/skill you can learn /easy/fast and get a good payment for What is a thing/skill you can learn /easy/fast and get a good payment for Hey guys. I am a CS student in Germany and would like to work as a freelancer beneath my study to earn some money. I dont want to work in a cafe/restaurant or in a supermarket as most other students to, I would rather prefer it to learn some…