Windows Movie Maker is a horrible free video editing tool. Choose anything but WMM. It has misplaced numerous video clips, shown extremely grating error messages, and totally compressed my quality. Anything. But.
Video is a beautiful medium. I have learned so much from YouTube videos about human nature, dance, cooking, scientific facts, and exercise. I have been inspired so much by Vimeo's short films and animation. Video is the new medium of art.