To start downloading apps, simply open the Google Play Store and browse through the various categories, such as games, productivity, or entertainment. You can also search for specific apps using the search bar at the top of the screen. This makes it easy to find exactly what you're looking for.
Once you've found an app you like, just click the "Install" button to start the download process. Depending on your internet connection, this should only take a few seconds. You'll then be able to find the app on your home screen or in your app drawer.