Apple - iMovie site

http://www.apple.com/ilife/imovie/

Apple - iMovie Tutorial

http://www.apple.com/support/imovie/tutorial/index.html

Tutorials offered by Iowa State University

http://www.design.iastate.edu/LABS/tutorials/imovie/basic.html

Tutorials offered by Stanford University

http://ldt.stanford.edu/helplab/imovie/

Tutorial offered by University of Vermont

http://www.uvm.edu/ets/tutorials/video/imovie/