I would like to say "nothing is easy"; a mentor taught me that long ago. Also, when I read on the Ember home page that Ember is for building ambitious web applications, right a way I though I better read all the docs, the source code, and the tests to get to know what Ember does.
Since nothing is easy I would say that the Ember community is totally aware of that and very helpful. I was very impressed by the guides and the api docs. Reading the Ember source and especially the tests has helped me to begin to understand how Ember works.
For me getting started with Ember was not about completing a TODO app or just watching a tutorial video and then pounding out some code. But instead has been about studying existing applications like the Discourse application or the Travis app. I recently say I sweet Emberpress app much like the iOS app "Letterpress" and was amazed at how well the code just makes sense.
Getting started with Ember takes ambition and IMHO is well worth the investment.