Install GNOME on Debian Wheezy 7 Xfce
The Guide shows you Step-by-Step How to Install GNOME 3 Desktop on Top of Debian Wheezy 7 Xfce Linux.
Inside to the How to Install GNOME on Debian Wheezy 7 Xfce you will Find Links to
How to Install/Switch-to KDE Desktop, Latest Firefox and Google-Chrome for Debian Wheezy.

-
Open a Terminal Window
(Press “Enter” to Execute Commands)In case first see: Terminal QuickStart Guide.
-
Install the GNOME Desktop on Debian Wheezy Xfce.
Copysu -c "apt-get install aptitude tasksel"
Copysu -c "tasksel install gnome-desktop --new-install"
During Setup you will be Asked to Set the Default Display Manager and then you Can Safely Switch to gdm3.
-
Reboot Into GNOME Desktop.
Possibly Click on “Other…”.
Debian Wheezy Xfce How to Install KDE4 Desktop
Here Debian Wheezy Install KDE
Linux Debian Wheezy Xfce How to Install/Switch-To KDE4 Desktop Easy Guide
How to Install the Latest Firefox on Debian Linux:
Here Install the Latest Firefox for Debian
Linux Debian Distro How to Install the Latest Firefox Release Easy Visual-Guides
How to Install Google-Chrome Web Browser in Linux Debian
Here Installing Chrome for Debian
Linux Debian How to Install Google-Chrome Web Browser Detailed Guide List