macfidelity

Capturing actions on a computer makes sense for sure. Unfortunally there are many paid-software solution.

Jing is a free solution for both platforms (Windows & mac)

Basiclly it can capture images and create videos

Quote from macupdate.com

Jing is a screen capture application that allows you to select and capture parts of your screen and save that area as a static picture or even a movie.

Then you can add arrows, text and box highlights to draw further attention to the area you want to highlight.

The thing that makes Jing unique is that it has a “share” button, which allows you to share the image or video with a friend by connecting to the free screencast.com image hosting solution. Click share, it uploads your media behind the scenes, and places the link to the screen

Video about the app can be found here.