The Control Center

• Use it to change the behavior of KDE
• You can change the color
• You can change themes
• Unlike in GNOME, you can't change Window Managers

Virtual Desktops

• You can have multiple screens, or desktops
• You can switch between them with the mouse
• Choose Control Center | Application | Panel | Desktops | Visible to create more or less screens
• Ctrl Tab switches you between virtual desktops -- Or at least it does in RedHat

Running Commands

• There is a run command, you can access it with alt f2
• You can open a terminal window, and type in the name of the command
• You can run the command from the menu system.
• Note that there are multiple sets of menu systems, one from KDE, one from GNOME, and one from RedHat