The Play Store is an application that allows users to discover, download, and install an abundance of apps from the world's largest software company, Google. You can also browse the latest apps, and view their screenshots and reviews.

As you might have already guessed, downloading an app from the Play Store is quite simple. You just need to visit the Google Play Store page, click the menu in the upper right corner, and select the app you want to download.

On the other hand, updating your app to the latest version is a bit more complicated. You will need to uninstall the current version and install the new one. To do that, you will need to go to the Google Play Store page, click the menu in the upper right corner, and select the update.