Heh, I just took a look at their site and found a scrolling bug in less than a minute. I’m not sure if I’m so good or I’m just so “lucky”. 
At first I was a little worried seeing iex, but looks like the shell is running in browser. That’s truly amazing how much those people already achieved. What they claim is local-first and offline support features which makes it even more interesting. 
I wonder if the language tour would still work when my connection with internet would be lost? Like if it works out-of-the-box or some support has to be added … 
I would like to see a project where people can connect their accounts and write their guides or document a short code samples, so they can be linked and maybe even embedded on the forum … Something like a livebook blog would be truly amazing. Currently .livemd files can be hosted in the public git repo, but page like that would give them a huge boost in popularity. 
Oh wait … since everything could just work in browser, imagine a simple integration with git, so let’s call it .popcornmd could be simply imported with 0 server work. Think that you enter myelixirtutorial.com/github/your-nickname/your-repo and you can link each file just like it would be a normal web page …
