Convert Active Income to Passive Income

[Koji]

Hello, I'm an 18-year-old recent high school graduate. I've decided to postpone my university studies for 1-2 years to work on self-improvement while I have the time and financial means. I am currently working from home and have enough income to provide financial support to my family. However, there are many things I would like to accomplish that require additional funds. My goals are practical and not just frivolous desires. To achieve them, I believe it would make sense to generate passive income as a first step. Can you provide some ideas on how I can generate passive income? I do not expect to start making money right away; as I mentioned, I have the time. I am planning to start taking a Udemy course soon. In addition, I am considering opening an internet site, but I am not sure how feasible that is. I appreciate any guidance you can offer. As I write this message, I realize I can't sleep from seeking ideas. It's 5 in the morning! ????