We leverage the powerful graphic design capabilities of a couple free software packages here at the Maker Hub. That way, once you learn it here, you can take it home and apply your knowledge.
Inkscape is professional quality vector graphics software which runs on Linux, Mac OS X and Windows desktop computers. We primarily use this software to ready files for the laser cutter/engraver, however it is a powerful graphic design software package that can be used for any application.
Whether you are a graphic designer, photographer, illustrator, or scientist, GIMP provides you with sophisticated tools to get your job done. If Inkscape is to Illustrator, then GIMP is to Photoshop. Use this tool to touch up photos and manipulate computer images.