Here are the important links for the Hive13 Vector Drawing Class I am teaching:
Beginner:
http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Introduction-VectorGraphics.html
http://en.wikipedia.org/wiki/B%C3%A9zier_curve
http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Anatomy.html
http://members.gamedev.net/trapperzoid/ia/inkscape_introduction.html
http://digitaldung.com/Inkscape%20Tutorial.html
http://vector.tutsplus.com/tutorials/illustration/how-to-create-a-vector-light-bulb-icon-with-inkscape/
http://www.freesoftwaremagazine.com/columns/inkscape_tutorial_creating_simple_ribbon#
http://inkscape.org/doc/index.php?lang=en
http://inkscape.org/doc/basic/tutorial-basic.html
http://verysimpledesigns.com/vectors/inkscape-tutorial-paisley-motif.html
http://vimeo.com/2856917
http://screencasters.heathenx.org/
http://www.youtube.com/watch?v=o657KLnLROU&feature=related
Average to Advanced User:
http://vector.tutsplus.com/tutorials/illustration/draw-a-realistic-vector-guitar-in-inkscape/
http://inkscape.org/doc/tracing/tutorial-tracing.html
http://vector.tutsplus.com/tutorials/illustration/creating-a-coffee-cup-with-inkscape/
http://art.vinayraikar.com/2007/09/illustrating-3d-objects-in-inkscape.html
http://www.inkscapetutorials.org/
http://kalaalog.com/2008/05/04/illustrating-tomato/
http://tutorialgeek.blogspot.com/2010/11/draw-pumpkin-using-inkscape.html
http://libregraphicsworld.org/articles.php?article_id=16
http://vector.tutsplus.com/tutorials/illustration/create-a-realistic-candle-in-inkscape/
http://vector.tutsplus.com/tutorials/icon-design/use-inkscape-to-create-a-grunge-rss-box-icon/
http://aqeeliz.com/2007/04/inkscape-tutorial-using-gradient-over-multiple-objects/
http://inkscape.org/doc/shapes/tutorial-shapes.html
http://blog.worldlabel.com/2009/business-card-tutorial-in-inkscapeorg.html
http://verysimpledesigns.com/vectors/inkscape-tutorial-kokeshi-doll.html
http://tavmjong.free.fr/INKSCAPE/MANUAL/html/index.html
http://howto.nicubunu.ro/inkscape_brushes/
http://www.sitepoint.com/create-xp-style-icons/