How you can be master in Angular

Rule of Thumb => Learn Angular from the Angular Team. 

All major concept has been listed in short in the below url. Checkout any concept quickly and start learning on it. 

Angular Bible: https://angular.io/guide/glossary#service  

On the left navigation, you will get the tutorials of all individual topic. Else, you can search them from the top right corner.

Be familiar with basic things, and then go depth. For example, following are a few complex examples where we can do many things in one shot. 

Implements and import multiple classes

export class PeekABooComponent extends PeekABooDirective implements

             OnChanges, OnInit, DoCheck,

             AfterContentInit, AfterContentChecked,

             AfterViewInit, AfterViewChecked,

             OnDestroy {

import {

  AfterContentChecked,

  AfterContentInit,

  AfterViewChecked,

  AfterViewInit,

  Component,

  DoCheck,

  Input,

  OnChanges,

  OnDestroy,

  OnInit,

  SimpleChanges

} from '@angular/core';

Similar concepts you'll found while walk through the tutorial from Angular site. The other one very helpful example tutorial from Angular is tour-of-heros - https://angular.io/tutorial/tour-of-heroes

EnjoyGood luck!