Several things have gone wrong here, starting with the thread title. A good title is descriptive without being verbose. This one does not meet that criteria. Second, we don't care if you are not tech savvy. The internet exists so that non-savvy people can become savvy. Finally, I see the word Origin in your post. That may indicate that you are beyond all hope.
The manual is old because Pescado is old. The old framework will still work, but requires a bit of know how (and I do mean a very little bit) or knowledge of how to search and read. As we are not in the habit of being overly helpful, I will leave this hint:
If only there were some place with instructions on how to mod any Sims game. What am I saying? Even if such a place existed,
there would be no way to find it.