See our Fab Lab specific tutorial at:
https://docs.google.com/document/d/1Yck6-zOFX5B75dlv1EvKawbjuQrYNIP15_hh479P71U/edit
An introduction to Inkscape specific to the Fab Lab, for our Epilog Laser Engraver:
https://docs.google.com/document/d/1Yck6-zOFX5B75dlv1EvKawbjuQrYNIP15_hh479P71U/edit
Recommended Raster and Vector Settings (50 watt)