This video tutorial covers two key aspects of Angular 2: the HTTP module and observables. It explains how to use the HTTP module to make GET and POST requests to external APIs, specifically using the JSONPlaceholder API. The tutorial also introduces observables for handling asynchronous data streams and demonstrates how to implement them in an Angular application. Additionally, it shows how to use the map operator to process JSON data and how to style the application using Bootstrap.

What steps are necessary to use the HTTP module in an Angular application?

How do you handle the response from an HTTP GET request?

What changes need to be made to switch from promises to observables?

What happens to the data when a post request is made to the API?