Not just via your old notes you can help your juniors by providing them with tutoring sessions, and make money with it. You can also choose the online tutoring option like Preply for earning money, in a subject with the number of views and download one gets. You can give tutoring lessons of some musical instrument or dance form, coaching is for anyone who holds cognition about something that people would be keen to learn. This is the best way to earn money, as I frequently discuss this in my write-ups. For every person there comes a different way of coaching, one can also become a home tutor. Many parents search for home tutors all the time.
YouTube is another great place you can earn money. If YouTube Partnership is available in your country, then you can monetize your channel and earn some money off it! Youngsters these usually have an interest in things like Video editing and stuff. And many of you visit YouTube every so often to look at videos. So why not cash your talents? Upload videos on YouTube, popularize them, and see your earnings go up! We have written a detailed article on how to earn through YouTube.
The first thing that you can sell in college are the notes you take in class. There are many ways to do this. Almost every major campus typically has a note-taking/note-selling service on campus. For example, the University of California, San Diego has A.S. Lecture Notes, which pays note takers and charges note buyers. However, there are also online services such as StudySoup, which allow students to sell their notes online. There are students who are making over $5,000 to $10,000 selling their notes.
Watch for emails asking for note-takers. Once a fellow students' needs are documented, disability services will contact the professors and ask for volunteers in the class to take notes, and your professor will in turn email the class. You can also upload your notes to a platform like Stuvia, where you can earn money by selling your notes to other classmates.