Just came across Animated Explanations thanks to a tweet from @ninapeery.
Animated Explanations is a website "full of animated movies, interactive tutorials and instructional videos, all free for you to view and to embed in your website".
Currently there are over 50 animations covering the areas of Health, Technology and Work. Great little assets for your online learning environment!
You simply select the animated explanation that you want and follow the instructions to add it to your site. Works a treat. Here is one, from the Work section, about choosing a safe password.
How to choose a safe password - Animated Explanations