You can use whatever software you would like to use for this assignment, but we'll help you use Windows Moviemaker - it's not fancy, but it will get the job done, and it's available free on any Windows-based PC. To find Windows Moviemaker, click on the Start Menu, go to All Programs, then Accessories - Moviemaker should be in that folder.
Here are the basic steps for creating a video:
Here are a few places to look for materials to incorporate into your video. You can also record your own videos.