Great Online Courses Open During COVID-19

From global universities

1. Math 247B, Classical Fourier Analysis, UCLA

https://terrytao.wordpress.com/2020/03/14/course-announcement-math-247b-classical-fourier-analysis/

2. Textbooks by Cambridge

https://www.cambridge.org/core/what-we-publish/textbooks
(Free access is available until the end of May 2020.)

From global companies

1. Introduction to Python

https://docs.microsoft.com/en-us/learn/modules/intro-to-python/

2. course.fast.ai (v4)

https://github.com/fastai/course-v4

3. Coursera for Campus

https://www.coursera.org/coronavirus