Have you seen the website TeachParentsTech.com? Google has been advertising it, and I think it's hilarious / actually really useful. There are several categories of videos available, everything from choosing a secure password to learning how to send photos via email and use video chat. The videos are short (less than a minute long). It leans toward Google and Macs but also has some useful information for PC users.
Go to the website HERE.
The website is supposed to be for parents, but I definitely learned a few tricks by watching the videos. Even if you are already really tech-savvy, this may help you explain concepts to less computer literate family and friends.