Anyone using the Moodle course management tool might want to check out the Moodle Tutorial site, which has, not surprisingly with a name like "Moodle Tutorial", a large collection of video tutorials demonstrating how to do all sorts of things within the Moodle environment. This is much like a YouTube style video sharing site in that users can upload videos (as long as they have to do with Moodle) and share their videos with others. You can comment on other videos and also embed them on your site or blog. I have included a video from the site for your enjoyment. This is a general presentation/overview of Moodle.