Design
AutoCad (2D Modeling)
http://www.cad-notes.com/2010/06/100-autocad-tips-you-should-know/
Inventor (3D Modeling)
http://www.youtube.com/watch?v=ayDYAuRL6z8&list=PLB7AF3CE5CDFB1A32
http://www.youtube.com/watch?v=lHKs4p40pF8&feature=c4-overview-vl&list=PL577C624BE37BC855
Mechanics Overview