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This is a linkpost for the online courses and series of the Marginal Revolution University[1] (MRU):
I have completed the course Principles of Economics: Macroeconomics, and found it very useful to clarify, solify and expand my knowledge about macroeconomics. I have a background in engineering, but guess it is one the most cost-effective ways of learning macroeconomics. The course comprises 80 videos on the following topics:
I listed the courses and instructors alphabetically.
I completed their course on Microeconomics and I found it helpful.
Thanks for commenting, and welcome to the EA Forum, Jachym! I am now doing their course on microeconomics, and I am finding it super helpful too.