2 - 6
Angular has introduced many new concepts around how to construct components. There's new template syntax, a new event system, a new transclusion system, life cycle hooks, a renderer, and on and on. If you're familiar with Angular 1 and you're looking for Angular $scope, Angular $compile, Angular transclusion, and everything about Angular components then this course is exactly what you're looking for.
This Angular course assumes knowledge of some fundamentals. We have an Angular course that will Get you started