This lesson is part of the Rxjs and Reactive Patterns Angular Architecture Course - https://angular-university.io/course/reactive-angular-architecture-course?utm=yt1&couponCode=RXJS_YOUTUBE_LAUNCH This video contains an explanation for what is the RxJs Library - it presents it as toolkit for building applications around the notions of the Observable pattern. For more videos tutorials on Angular 2, check the Angular University website - https://angular-university.io/ Follow us: Twitter - https://twitter.com/AngularUniv Google+ - https://plus.google.com/u/1/113731658724752465218 Facebook - https://www.facebook.com/angular.university Check out the PDF E-Books available at the Angular University - https://angular-university.io/my-ebooks