http://www.vdssolutions.co.uk/
http://au.autodesk.com online classes
http://www.ascented.com/courseware_inventor_home.htm
http://www.mcadforums.com/forums/viewforum.php?f=41&sid=49f36c1ad80f80bb40a8d77146394445
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
http://usa.autodesk.com/adsk/servlet/autoindex?siteID=123112&id=3365505&linkID=9242016
http://www.b2-design.biz/tuts.html
http://www.google.com/search?sourceid=navclient&aq=0h&oq=ed+eaton+&ie=UTF-8&rlz=1T4ADSA_enUS381US381... (another SoftWare - but the principles are the same)
That should keep you busy for a day or two.
The CADWhisperer YouTube Channel