I want to teach myself a skill online, and I can make money at home in my spare time. What do you recommend?

Personally recommend anything related to e-commerce, such as ps, such as photography, such as part-time operation, and you can pick up business online after you have mastered it. I think many ps have not learned the essence, so they just take business on Taobao, simply dig out the map, make the main map and make the detailed page, and they can earn 30 yuan in a few minutes. Taobao has product photos taken at 10, 200 yuan and others.