Angularjs JavaScrip

hello!!!
I’ve been using Angular 2 tutorials that covered how to deal with requests and handle responses.
I made classic mistakes like forgetting to add the correct providers to the bootstrap. It took more than expected to have everything working perfectly.
This guide made the difference for me:

angularjs timeout

http://bit.ly/2aTqtOF  part 1 and 2

The explanation about observables was short and clear.
If anyone has any other source for this topic or for learning Angular 2 in general, it will still help me a lot.
Cheers!