:) MAC address stands for Media Access Control and is sort of like a permanent address that is attached to your network card. Spoofing is like putting on a mask, presenting a false front. So what this video is about is how to "change" your network address to get around programs that use it to log you. This is valid for all operating systems. It's like on a car how they have VIN numbers stamped on them it doesn't matter the make or model they all get a VIN number, the MAC address is supposed to be the same thing for computer network cards, they aren't supposed to be changed, but you can, and this video shows a way. Hope that helps a little. It's worth it IMO to know about the ways you are tracked online and to know ways to hide that, and MAC spoofing is def a good way.