Open Source Graphics Editing/Design Programs
http://sixrevisions.com/graphics-design/10-excellent-open-source-and-free-alternatives-to-photoshop/
Cnet- can download the former google sketchup here.
http://download.cnet.com/mac/graphic-design-software/3150-2016_4-0.html?filter=licenseName=Free
Open Office
http://www.openoffice.org/product/index.html
Inkscape website with tutorials/doc
http://inkscape.org/
Serif Starter products
http://download.cnet.com/1770-20_4-0.html?tag=pfindersrch&searchtype=downloads&query=serif&filter=platform=Windows|&filterName=platform=Windows|
misc list including Scribus and Gimp
http://www.snap2objects.com/2007/07/45-best-freeware-design-programs/
http://www.snap2objects.com/2007/08/40_best_open_source_graphic_programs/
Mac Freeware
http://www.marcofolio.net/features/top_15_free_mac_apps_for_graphic_designers.html