This is the "Bitcoin and cryptocurrency technologies" online course, based on a very successful course taught at Princeton. It's a series of 11 lectures, plus programming assignments, a textbook, and other learning materials. Here's the course announcement: https://freedom-to-tinker.com/blog/randomwalker/sign-up-now-for-the-bitcoin-and-cryptocurrency-technologies-online-course/
For the full interactive experience, sign up via the link on that page. If you just want the lecture videos, simply subscribe to this channel.
Links Related to Bitcoin and Cryptocurrency Technologies Online Course
3.Introduction to Digital Currency - MOOC offered by University of Nicosiadigitalcurrency.unic.ac.cy