Install Firefox in Debian 8
Lets begin by downloading Firefox.
Visit the official Firefox site https://www.mozilla.org/en-US/firefox/ and click on Download button.
This will download a file like firefox-xx.x.x.tar.bz2 where “x” is the current version of Firefox.
Lets move that file in /usr directory.
sudo mv ~/Downloads/firefox-xx.x.x.tar.bz2 /usr
Go to /usr and decompress firefox:
cd /usr
sudo tar xvf firefox-xx.x.x.tar.bz2
remove the compressed file:
sudo rm firefox-xx.x.x.tar.bz2
lets create the launcher. Press the “Super Key” (this one is located on your keyboard between “ctrl” and “alt”. In windows world is also called “Windows Key”)
then type “main menu”

Click on “Internet” on the left side and then click “New Item” :

Now on the top left side there is an empty icon button press on that and navigate to:
computer -> usr -> firefox -> browser -> icons and select the mozicon128.png
for name use “Firefox” and for Command use “/usr/firefox/firefox-bin”

Now Firefox is installed and ready to run. to execute Firefox press the “super key” and type firefox.
Note icons might need a restart in order to appear correctly

