If you have a tough time explaining computer topics to your parents, you can leave the job to the Common Craft folks. In fact, even regulars can benefit from watching their videos for their simple explanations. The enterprising pair of Lee & Sachi LeFever have been doing a great job of producing short educational videos on technology topics "in Plain English" & sharing it with the world for free (for non-commercial use). They have a unique style of explaining complex topics in a light-hearted way.
So interesting is their format that Microsoft & Google, among other biggies, have engaged them to shoot videos for their products.
Also see:
History of Microsoft
HOW TO add subtitles to YouTube videos