How do I edit the text in a mod? (Absolute beginner)

Hello hello! I would really appreciate some help.

Someone told me that if I want to edit the text of a mod for my own private use, then I should open the package in S4S, and then a pretty nice list of instructions followed. Unfortunately, I was doomed from the start, so none of it makes sense.

First problem- I don't see a warehouse tab anywhere (The first step I was told to follow)

Second problem- When I open the package in S4S, it shows a long table with entries that alternate between "Sim Data" and "Buff Tuning," which I have absolutely no idea what to do with.

Please, I just want to edit a mod's text to be less janky/broken, but I feel like I asked for directions through the woods and some fellow traveler handed me a 4D map.

I have version 3.1.3.6 (Wishes)

Thank you for your time