JSON URL format


Hi all,
First of all, congratulations for your success! Right now, I am working on chap.21 (purchased book) with the new NSURLSession API and trying to apply it onto my conference app.
I tried to see the courses.json URL data structure, but it’s a protected (forbidden) page.

1- I’d like to see your json data structure URL.
2- What would be the recommended way to build a json data URL for a conference?

Currently, I can’t pull data from this URL:

I can only list a simple json like:

Thanks for your help!