[Shameless plug]: I've been writing a book on Angular 2 over the past few months: ng-book 2 [1]. If you want to write your first app, you can get the first chapter of our book for free.

You can of course learn Angular 2 from lots of disparate blogs on the internet. There's lots of good resources. But the goal of our book is that you'll be able to learn everything, in-order, in one place.

We've been keeping the book updated alongside Angular's development (though it will take us a few days to get up to the most recent beta). We've already updated the book over a dozen times, so I think you'll really like it.

[1]: https://www.ng-book.com/2/

I had a positive experience with ng-book for ng1. Although I've only read about half, I found it very useful.

I haven't started using ng2 yet, but if I do decide to learn it i'll be purchasing ng-book 2.

ng-book is one of the most in-depth resources that I recommend to those who want to get into angular development. I can't quite say the same for ng-book 2, as I have not yet read it, but it's definitely worth spending money on, especially when you get the updated versions on digital copy.

egghead.io could be worth checking out...

They seem well prepared for the demand in Angular2 training :

https://egghead.io/technologies/angular2