Hone the Home Screen
Once past the Lock screen, you’re presented with the Home screen—the grid of icons that you tap to launch apps. Resting at the bottom of the Home screen is the Dock, which makes it easy to get to a fixed set of your most-used apps regardless of which Home screen page you’re on. On an iPhone or iPod touch, the Dock can hold icons for four apps.
Learn Home Screen Basics
To return to the Home screen from any app, press the Home button on your device. If your device doesn’t have a Home button, swipe up from the bottom of the screen—this also works on the iPad. Except as otherwise noted, this gesture acts the same as the Home button.
The Home screen ...