I'm currently in my sophomore year of my High School, and I fairly adept at web design(HTML/CSS/TypeScript/BootStrap etc). I wanted to generate a little bit of money via passive income on one of my websites, just enough for lunch money every day. However, when I was in my Career's class, my teacher mentioned that even if you own your own business, you need to keep logs of all the money you have gained and send it to the Canadian Government. Would this still apply, on say ad clicks? Would I have to keep a record of all the ad clicks and how much money I receive from it and send it back?
Sorry if my question does not really make sense, I worded the question really badly. If you need clarification please let me know.