TIP: HOW TO EASILY SWITCH BETWEEN APPLICATIONS
If you’re someone who uses many apps at one time, switching between them can be frustrating especially if you can’t see your desktop. Having many apps open can significantly slow your machine and possibly even cause crashes!
Mac users: Press CMD+Tab to view all of the applications you have open. While holding CMD down, keep pressing tab to switch between apps.
When you land on an app you would like to quit, just press CMD+Q to close that app down.
(On Windows: Try ALT+Tab. To close the application, ALT+F4)
Hope that helps speed up your machine!