Angular 2 $http - sinsunsan/archiref_wiki GitHub Wiki
Multiple requests query with observables http://www.metaltoad.com/blog/angular-2-http-observables
Related requests (the result of one to do the other) https://coryrylan.com/blog/angular-multiple-http-requests-with-rxjs
Complete example with starwars api https://www.barbarianmeetscoding.com/blog/2016/04/02/getting-started-with-angular-2-step-by-step-6-consuming-real-data-with-http/