iPhone, iPad, and iPod Touch:

1. Launch the Safari browser on Apple's iOS.
2. Navigate to the website or webpage you want to add to your home screen.
3. Tap the Share button on the browser's toolbar - that's the square with an arrow pointing upward. (It's on the bar at the top of the screen on an iPad, and on the bar at the bottom of the screen on an iPhone or iPod Touch.)
4. Tap the Add to Home Screen icon in the Share menu.

Android:

1. Launch Chrome for Android
2. Open the website or webpage you want to pin to your homescreen.
3. Tap the menu button.
4. Tap Add to home screen. (You'll be able to enter a name for the shortcut and then Chrome will add it to your home screen.)