quick introduction to autocad 2011

i need an introductory video or presentation to teach me how to use this version effectively.

thanks

Try starting with the tutorials you'll find here at CADTutor.

Check out youtube as well.

If you work your way through this, you should have a handle on the "basics"

A lot of what you'll find will probably be prior to the Ribbon, but the commands mostly work the same, it's just the tool locations that are different.

http://www.we-r-here.com/cad/tutorials/level_1/1-1.htm