Another way to move between the windows is using the Application switcher, a popup window which appears using the default shortcut keys ALT+TAB. Its usage requires to keep the ALT key pressed and press the TAB key multiple times to move between the applications.
When multiple windows are opened the desktop can soon become a mess, fulfilled with many windows covering the others and to find your application can be really frustrating. The GNOME Shell offers multiple possibilities to help the user to handle multiple windows.
The absence of a classic windows list like in others desktop environments could initially make you feel lost, it’s never easy to change your habits. After years of MS Windows, Apple OS X, GNOME and KDE the new GNOME Shell solution will surely appear unfriendly to adopt but after the initial approach it should you result really simple and natural.
While it’s surely the most important part of the GNOME Shell I left it at the last to give it more attention as it needs. I’m obviously talking about the Activities button, located in the upper left corner of the panel.
You can click upon it but you can also simply move the mouse pointer in the upper left corner of the screen to make it react as it was effectively pressed. In such case, a light blue animation (called ripple) is shown to help the user understand why the Activities screen was shown.
With the default keyboard configuration, the left Win key also works like to press the Activities button.
The GNOME Shell 