You could build computers or fix computers or if you want to do it from the software side becme a computer programmer
I would suggest using your computer to database the criminal activities of attorneys at your local district court.
Yes, you can earn money from social media site.
why not open a e-shop, and ship goods like from China
You can work FIVERR .COM .
Im 13 years old and want to know what I can do to earn money by working on computers mainly the hardwarw side