Just purchased it, looking forward to going through it. Why did you choose an e-book over screencasts or other methods of teaching? Also, what are your thoughts on supersonic?
I am planning to do some version of screencasts in the future. It's just I need a partner to do the voice (I am not native English speaker). As far as Supersonic, it's still not a fully web app, meaning you still have to use some sort of native code mixed in Steroid. I am not sure how it works when you have larger app with lots of plugins.