Ways to make money from music?

I am really looking for a way to make a little bit of cash making music, which is my complete passion. I have been taking guitar lessons since I was about 6, and have been studying music/jazz theory for YEARS. There are some things I would really love to save up for, but I can't really get a job. I am a teenager, and I don't have a car or anything I could use as transportation. I have been recording a lot lately, and I do a lot of improvisation with my Boss Digital looper and BR-800 recorder (not to mention my entire rig, which consists of many pedals on a pedal board, collection of amps, and so much more). I have invested a lot of money, time and thought into music in general, and have wanted since I was a little kid to be a musician when I grow up. There are some things I have thought of that actually kind of seem realistic. A lot of people tell me that I should go to places like farmers markets, set up and play with an open case. I have been told I could make a pretty decent pay doing that. Another thing I would love to do is start something like a youtube channel, and if I could get enough people to enjoy the music I post (Which would be a challenge and hard enough on its own), I could monetize my videos and collect revenue. But like I said, I am a teenager. Would I even legally be able to go to a place like a farmers market and play to collect money? Would I be able to collect revenue from sites like YouTube? What are the legalities of these scenarios, and what are any suggestions you might have? Making money doing something I love is great, but if I got out and really did something with music, I am know that would be really good to put on a college resume, and it would really stand out. Obviously, music is a hobby and a passion, and I am involved in it for fun, but if I could somehow make some saving money by playing, I would really be amazed. Thanks in advance!