Harvard University is offering over 60 different online courses free of charge in various fields. Field that are covered include the following:
- Business
- Programming
- Health & Medicine
- Art & design
- Humanity studies
- Social Sciences
- Computer Science
- Science
- Data Science
- Mathematics
The duration of the courses are not all the same. There are some lasting 2-3 weeks and others panning longer than 10 weeks.
check the link 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=&page=3
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