Coursera has a lot of intro-level courses, but not really much in-depth stuff. that depends on your definition of intro-level. Take CS. Yes they have intro le

Coursera has a lot of intro-level courses, but not really much in-depth stuff. that depends on your definition of intro-level. Take CS. Yes they have intro level stuff Learn to Program | An Introduction to Interactive Programming In Python Then they have classes that require prior knowledge princeton algorithms | stanford algorithms | functional programming | programming languages then more advanced class like probabilistic graphical models | compilers | information theory | neural networks | reactive programming | analytical combinatorics Plus this is just the first wave. You can see that they're organizing classes so they go deeper with their specialization tracks. And its natural that professor's would create the introductory courses first ... because obviously one has to learn the fundamentals before you can proceed to more advanced classes. Furthermore, I expect that the next round of classes you'll start to see more advanced materials. Robert Ghrist who's created the UPenn Intro to Calculus class said his goal is to create a MOOC in topology (his specialty).