- Installed nodejs
 - Installed npm
 
npm install -g @angular/cling new angular-introduction
# yes to routing &
# scss as stylesheet format
# Or instead
ng new angular-introduction --skip-git --skip-tests --routing true --style scss
cd angular-introduction
code .- Open run and debug tab
 - Run 
ng serve 
npm start -- --open # (in a new terminal)ng generate component hello-world
# or
ng g c hello-worldrm angular-introduction -rf
npm uninstall @angular/cli