All of the apps on your phone, including any apps that you downloaded and installed from Play Store or other sources, are grouped together on the Applications screen, which you access from your Home screen. If you have more apps than can fit on the Applications screen, you can slide the screen left or right to view more.
Tap the Apps icon to open the Applications screen.
Slide the screen left or right to bring more icons into view.
Tap an app icon to open the app.
Tap these to select Apps, Widgets, Search, or the menu options.