I want to start working on some side-projects, but I have zero knowledge of web development. My question is:
Are web development skills the only skills I can use to make side-projects? If yes, could you please explain what's the best way to learn web-dev in a short time? If no, what other skills can be useful for side-projects?
It doesn't even have to be purely software. You could use Raspberry Pi to do a hardware project, for example. Check out these projects: https://www.hackster.io/raspberry-pi/projects