Ashwin Sureshkumar

https://angular-2-training-book.rangle.io/handout/bootstrapping/bootstrapping_providers.html In above section, the code calls a service and interacts with the variable direct instead define a getter method.

https://angular-2-training-book.rangle.io/handout/features/classes.html In the above section, there is reference to `.bind()` `.call()` and `.apply()` - add references or explanation about the above methods.

https://angular-2-training-book.rangle.io/handout/observables/observables_vs_promises.html It would be worth mentioning that observables act on stream of data which are compositional or chained over with `map, filter, reduce .. `

https://angular-2-training-book.rangle.io/handout/advanced-components/elementref.html The above section contains a code snippet and a one line explanation about elementRef. Would be better if an explanation could be added on what the code is doing...

https://angular-2-training-book.rangle.io/handout/advanced-components/ The above section has a banner image of a network PCI Card when discussing about advanced components. If possible to update the image to be more relevant.

https://angular-2-training-book.rangle.io/handout/components/app_structure/passing_data_into_components.html The above section mentions about Angular 2 events model but doesn't contain a section explaining what it is and would help to include a code example as well.

https://angular-2-training-book.rangle.io/handout/features/refresher_on_this.html The section provides a short refresher of `this` and context. The section has code for a class but doesn't display the object creation but goes straight to discuss about...