I made a walk though for installing the auto mailer ip address on your octoprint installation when you don't have access to a gui like in the video.
There's a notepad step by step and some screen shots of the things you need to follow to install it all in the zip file.
Watch the video, open the links under the video and follow the documentation in conjunction with my instructions and you should be up and running in no time.
You should have octoprint installed before doing this!
Let me know if this was easy enough to follow and if it needs any clarification.