In this tutorial: create and layout light sources, create glass, create mirror, keyframe and render video. This is the 4th in the series "Learn Blender with me" for beginners to learn about Blender.
Can install by from Blender's addon menu by pressing install and then selecting the python file (MirrorAddon.py) as the addon. Then check the box for the addon that is added (newer versions of blender ...