I had a problem getting these feeds (mentioned around the 20:00 mark) to load properly in the app as described later in this demo series. I was able to make it work by changing all atom.aspx URLs to rss.aspx. Other than that, great series. I look forward to using what I learned here in the very near future.
I've been messin with code for years and years, but I only just started pursuing it as a career. Fingers crossed.