The description of Google Play Store
The Google Play Store offers access to a variety of content, including applications, books, music, films, and TV programs. Hit the download button and you can install any app you want onto the device. Most of the apps are free of charge, but you need to pay a small amount of money to get some.
Do note that some paid applications are available to specific countries only.
If you are into an application, tap on it to see ratings and comment from previous users. I truly appreciate this feature as I can learn a lot in the comment section.