Hello, First of all, To install a theme you don't need to study computer science,
There is no need to see a single youtube video for using this theme. Even I never mentioned anywhere in my product page or even in documentation to watch or follow any kind of video.
Even, if you are familiar with Ghost itself then, you don't need to read the documentation itself too much.
The documentation is single page document and everything is clearly mentioned in the documentation. It should be maximum 5 to 10 munites to follow the documentation and install / setup this theme.
If you think you are wasting money then you can always submit a refund request. Or if you need help then you can always ask for help me ( the theme author ).
This theme is one of the top ten ghost themes in envato and it's sold more that 250 times with 20+ 5 star rating. And to be pointed here that most of the top ratings are for Customer Support.
So It's clear that you are blaming the theme and the author falsely.
There was better way for your good experience with the theme. But I am sorry to say that you choose the wrong way.
Anyway, I will request you to contact me via mail and sort out your problem. And re-rate the theme.