Authentication in angular with ngrx
http://mherman.org/blog/2018/04/17/authentication-in-angular-with-ngrx
Hidden feature in Angular Material CDK
https://medium.com/@simonb90/hidden-features-of-angular-material-cdk-ee07066d73d1
Angular Reactive Forms
https://www.codeproject.com/Articles/1239744/Angular-Reactive-Forms-with-Dynamic-FormArray-and?utm_campaign=NG-Newsletter&utm_medium=email&utm_source=NG-Newsletter_249
Apply Webpack bundle analyser to find bundle size in Angular App
https://alligator.io/angular/bundle-size/