If I want to master in angular what are all the important concepts and language's I need to know?

Question

Skills to know before learning angular

Answer 1

Robust, mature, good knowledge of JavaScript.
Also you can learn(for extending knowledge) cli(npm, git, etc), design patterns, testing, reactive programming(good to know too).

But the most important is JavaScript

Answer 2

you should have basic knowledge of html and css, javascript, typescript, understand http related topics for a start. you don't have to be proficient in them as you can research something you don't understand while you study about angular