Coursera is one of the popular online course and is currently conducting free course for Crypto Currency geeks and the course has been already more than 1 million enrolls.
How about you? Would you like to enroll also with the same course?
Bitcoin has been very popular among most crypto currency. A course about crypto currency will mostly talk what it is, how its gotten, and the advantages and disadvantages of using crypto currency as money. But due to its popularity, crypto currencies can be searched and be learned in surfing the internet. Given with the internet as a source of knowledge, it cannot give basics or how to manage cryptocurrencies smartly. And i think that is what those free courses will tackle.