Check out these KDE keyboard shortcuts, because we all know we love shortcuts!
This brings up the the “Run Command” prompt and gives you quick access to all your Linux applications. This is similar to Windows’ Launchy and GNOME-Do.
Cycle through the applications/windows you have open.
Close the window you have in the foreground (i.e., the active window).
4. Alt-Esc or Control-Esc
Shows the KDE session manager, from which you can switch to a specific application or log out of KDE.
Switch to a specific desktop.