The Visual-Guide Simply Show How-to Install Firefox Nightly 26 Browser i686/x8664 for Linux Fedora 18/19 32/64bit Gnome3 Desktop.
The Firefox Nightly Version Coexist Perfectly with the Eventual Others Firefox Installations without Making Any Troubles, this Meaning that an Unique Firefox Base Environment will be Shared between All the Firefox Versions on the System.
More than this Once Installed it Will Plug-In the Firefox Nightly Channel and Like Every Other Firefox Version in the Future will Follow to be Automatically Updated to the Newest Firefox Nightly Release. So it is Not a Wasting Time because You Install It Once and Keep Forever Freshly Updated :)
Inside the Instructions you will Find also a Link to How-to Create a Launcher for Firefox Browser on Fedora Desktop.

Download Latest Firefox Nightly:
Firefox 26 i686/x86_64 tar.bz2- Double-Click on Archive and Extract Into /tmp
- Open Terminal Window
- Relocate Firefox Nightly
Login as SuperUser
su
Make a Firefox Directory
mkdir /opt/firefox
Move Firefox Into firefox-Nightly so to Prepare for a Possible Firefox Multi-Version Coexistencemv /tmp/firefox /opt/firefox/firefox-nightly
Make a Symlink for Easy-Starting
ln -s /opt/firefox/firefox-nightly/firefox /usr/local/bin/firefox-nightly
Next you Can Start Firefox from Terminal withfirefox-nightly
Create a Firefox Nightly Launcher for Easy-Starting:
