The Application Shell Install the Angular CLI I nstall the Angular CLI , if you haven't already done so. npm install - g @angular / cli Create a new application Create a new project named angular-tour-of-languages with this CLI command. ng new angular - tour - of -languages The Angular CLI generated a new project with a default application and supporting files. S erve the application Go to the project directory and launch the application. cd angular - tour - of - heroes ng serve -- open The ng serve command builds the app, starts the development server, watches the source files, and rebuilds the app as you make changes to those files. The --open flag opens a browser to http://localhost:4200/ . You should see the app running in your browser. A ngular components The page you see is the application shell . The shell is controlled by an Angular component named AppComponent . Components are the fundamental building blocks of Angular appli