[Pharo-dev] Missing documentation for Pharo Launcher on UBUNTU

I am following the documentation here http://www.smalltalkhub.com/#!/~Pharo/PharoLauncher and it sends me also there http://www.pharo-project.org/pharo-download/ubuntu then it says "Just launch the Pharo launcher image using the platform-specific VM." but there is no information how to do that. There is also no information about where Pharo Launcher installs and what files it installs. Not good :(