Only I made Basic works for Beginners learn from it
Learn Basic of Angular 4 from this Video tutorial then download this project https://www.youtube.com/watch?v=KhzGSHNhnbI&list=PLillGF-RfqbYeckUaD1z6nviTp31GLTH8
After download this demo work
Import the Sql file i zttached in it in tha name of Db angular_four Then goto the path of your_file_path/ api/ng4 in your Command prompt or Git Bash whatever
Build and serve it
npm install
npm start
ng serve
Visit http://localhost:4200 and you should see "app works!"