This video is meant to help others understand things to consider when building a magic mirror. It doesn't cover build steps, as those are covered by a vast number of videos out there. Instead it focuses on things like understanding power consumption, cost, how it works, and how to configure them. These ten tips will help you save fime and plan a more functional, easier to manage, and an efficient mirror which you'll hopefully enjoy much more than without the planning.
Useful links from the video:
Methods to turn off your monitor:
https://www.screenly.io/blog/2017/07/02/how-to-automatically-turn-off-and-on-your-monitor-from-your-raspberry-pi/
Geeks3D - How to turn off the screen blanking (screensaver) on a raspberry pi:
https://www.geeks3d.com/hacklab/20160108/how-to-disable-the-blank-screen-on-raspberry-pi-raspbian/
Magic MIrror 3rd party modules list:
https://github.com/MichMich/MagicMirror/wiki/3rd-party-modules