Not sure why I couldn’t find this before, but I have located Apple’s iMovie ’11 tutorial. If you look at nothing else, you need to spend some time with this before class on Tuesday. It doesn’t look like it will take too long.
Be sure to spend some quality time with Lessons 1, 2, 3 and 4. In Lesson 4, you don’t have to look at how to add music to your video. Not sure how relevant the themes are going to be, either — even the “news” theme looks pretty cheesy.
Also: No need to look at Lessons 5, 6 and 7.