It's hard to digest if you hv 0 experience with programming. Anyway, I have uploaded here, modding 3 games.
I modded CabinGame in live in that video, you can check it out
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If you are not able to understand those videos, ignore the modding, just ask me ill mod one for you [when I'm free
]. If you are able to understand, you can mod yourself any renpy games. If you are stuck anywhere, while modding, I'll be available to help you out.
Procedure:
Collect all game based RPY files
put them in a single file in the correct updates/episode order
dos2unix it
mod it
put it back in the games folder
Edit 1: Download and view if you are not able to view in HD