A youtubevid to learn how to open a text based tools with text based input, and insert things that have to be written? I do not, and never will or want to, understand why some of you insist on this. watching loads of vid of people talking before pressing pause tocopy a text string letter by letter from a vidframe? It anoys me. I want to read it, then copy-paste the entire string directly. Less work, and quicker.
Look. You have installed MineOS, a system that runs on top of a linux type operating system. You will have to learn basic linux skills sooner rather than later if you insist on trying to install a minecraft server with advanced addons.
Take a look at this thread: Basic skills and interests you'll need to be a MineOS admin. All of those links are things you need to learn.
“where to put it”. Whenever we, or the wiki, ask you to write something somewhere, it is in a terminal window directly on the MineOS server. You need to use putty do do that. Thelog window in MineOS is only a peak into your Minecraft server. if you need a vid to show you how to use putty: https://www.youtube.com/watch?v=9CZphjhQxIQ
Youtube vids really stop beeing useful after connecting, since everything from there on is text based, so you’ll just be watchin people type things.