This is a different kind of e-learning site for Meteor. It's not an ebook but something like codeschool. But, we let users to do real coding on their own machine rather than doing stuff on the browser.
One of the coolest thins is our addictive points system and learderboard: https://bulletproofmeteor.com/le...
Very interestingly 95% of our paying users have the highest plan (which is $90). That's something I never expected.
Vercel