To start Angular follow the steps
1. Download node from ---https://nodejs.org/en/
2.After that Create Folder You want to keep your Project
3.Type npm install -g typescript (To install Typescript)
4.Again type npm install -g @angular/cli(To Install CLI)
5.After that type ng new your-app-name
6.Then move inside your Folder by cd your-app-name
7.Finally ng serve to start your app
It will start YOUR APP AT ---------- localhost:4200