Hi batman,
In the future please refer to http://answers.ros.org/
The discourse is primarily used for discussions, news, and announcements.
To answer your question:
Check out the Turtlebot wiki:
https://wiki.ros.org/turtlebot/Tutorials/indigo/Turtlebot%20Installation#turtlebot.2BAC8-Tutorials.2BAC8-indigo.2BAC8-ISO_Installation.Download_ISO_.26_Create_Startup_USB
The instructions are for Indigo, but you can use Kinetic, Lunar, etc, by following the installation pages:
http://wiki.ros.org/kinetic/Installation/Ubuntu