When you open a "console" widow you are running command line Linux. Linux can be fully run with out the GUI screens, in fact most servers never setup the GUI interface! The terminal "window" is very powerful and should be understood to really operate Linux to its full capacity.
Try these resources http://www.tuxfiles.org/linuxhelp/cli.html , or http://linuxcommand.org/
Any good Linux book worth anything will include how to run "command line" Linux.
Try these resources http://www.tuxfiles.org/linuxhelp/cli.html , or http://linuxcommand.org/
Any good Linux book worth anything will include how to run "command line" Linux.