Article: Navigate to the Google Play icon and tap to open. The my apps button is found at the top-left corner of the interface.  A slider will appear from the left after pressing this button.  If there are available updates for your apps, you will see the app name on the Updates section.  Tap on update all at the top-right corner of the screen to update all apps. To update apps individually, you can tap the update on the button of the app.

What is a summary?
Launch Google Play. Head to my Apps. Select my apps again. Update apps.