Make money online: YES

Selling class notes is generally remote-friendly as you can upload and sell notes online from anywhere with internet access. However, success often depends on being in a location with a high demand for notes, such as near universities. Reddit and other forums suggest mixed experiences; some find it profitable, while others struggle with competition and low demand. Time zones can affect communication with buyers, but it's not a major issue. Red flags include potential copyright issues and platform fees. Overall, it's viable but not guaranteed to be lucrative.