Yes! Coincidentally I was using that tutorial to learn backbone yesterday morning. I found it was a great all-round illustration of how everything ties together. One thing I found quite lacking in other tutorials was how you wire up your front-end backbone app to backend web services. This tutorial demonstrates how you do that very well.
Totally sympathize with that difficulty. If you have access to Safari Books Online, they have a really good chapter that also goes through the Backbone wiring-up process in their MongoDB book (which has a chapter about Backbone).