Free Software is software that can be used, studied and modified without restriction and can be copied and redistributed without restriction.
SOME EXAMPLES OF FREE SOFTWARE PROGRAMMES:
vimeo - longer video clips than you tube
ted.com - chronicals lectures and presentations annually
submedia.tv - blogging videos
ubuntu - computer operating system
open office - office suite
gimp - image editing
audacity - audio editing
open movie operating - video editing
blender - 3d animation
inkspace - graphics
scribus - layout
wordpress - blogging
wikimedia foundation - reference materials
In this video Tom Merritt, editor of CNet.com explains free options for all the usual programmes you normally pay for.