Love this question. I like both.

I find MOOCs difficult to finish if there isn't a community angle + strong carrot or stick. YC Startup School offers carrot of getting into YC and the stick of having certain privileges removed if you don't attend group sessions.

I love books but find it's harder to read a book front to back when there are so many more engaging digital experiences out there.

Currently working on a startup called TLDR which summarizes the world's best books for startup founders and teams.

Check it out if interested: http://www.hellotldr.com