You would start the Jupyter application, then use a browser to go to localhost:8888 :) To start the application, you would typically use the start menu on Wind

You would start the Jupyter application, then use a browser to go to localhost:8888 :) To start the application, you would typically use the start menu on Windows or the Dock on MacOS. Alternatively on MacOS you could point the Finder at the /Applications folder, then start the application from the Finder window. (This is not meant as an endorsement of notebooks.)