If you liked MIT´s blockchain lectures, this website has free (for certain amount of time) courses on blockchain by Berkeley, Linux and Hong Kong University.
If you want to expand your knowledge on blockchain, here are some great courses. Some of them easier to understand.
You can a free create account to access them for a couple of months for free or you can upgrade to receive a certificate and full access.
Also, there are some great non blockchain related content from prestigious universities.