How do I add a shortcut to my smartphone home screen for this website or any website?
Android: Chrome, firefox and Samsung Internet - Open browser and go to website, tap browser menu button [vertical triple dots] then tap "add to homescreen". It will be added to your home screen. You can a drag it to move to the place you want on the home screen.
iOS: Open safari browser and go to website, tap share button [box with up arrow] then tap "add to homescreen" icon. It will be added to your home screen. You can a drag it to move to the place you want on the home screen.