Scribus is an open source desktop publishing program available for Linux. Thanks to Scribus Team to make a very good program. Hope in the next version, it will has more advanced features. Unfortunetely in this version you can’t have built-in help program. You have to see at http://docs.scribus.net. Because NOT all people can get access to the internet all the time.
Make sure you are connected to the internet. Open your Linux Terminal (Applications > Accessories > Terminal) then type ‘sudo apt-get install scribus‘. The installation will take few minutes, depends on your internet connection speed.