Harvard university is offering 67 courses for free during this pandemic. You may share the link with anyone who wants to spend their time learning something new.

https://online-learning.harvard.edu/catalog?keywords=&paid%5B1%5D=1&max_price=&start_date_range%5Bmin%5D%5Bdate%5D=&start_date_range%5Bmax%5D%5Bdate%5D=