This will open a window similar to the one in the pic. Here you can see all of your downloaded apps.
More Apps Section
The main screen of some devices, as is pictured on the Android Help Main Page, is created using Apex Launcher. This is simply a desktop type app that makes finding your apps easier. The More Apps Section is where you will find all of your apps, including the ones listed on the main screen.
To access the More Apps Section click on the circle icon with the black dots that is located at the bottom center of your screen.