The Guide shows you Step-by-Step How to Install Firefox x8664 Latest Stable Release for Debian 7 Wheezy 64-bit GNOME3 Desktop.
And the Latest Firefox coexist without troubles with others possible Versions, this meaning that it’s sharing the Default Environment.
So to make easier the Visualization of the whole process the Guide includes the essential Screenshots.
Inside you find also detailed instructions about How to Create a Launcher for Firefox Browser on Debian GNOME Desktop.