Forget about scavenging information from other places! We need to develop this forum! It's already falling apart. Let's start posting information here. IMHO.

You should clarify what exactly people want to say.
You can gather information from Google and turn it into a manual; you can even use the structure of questions from the Physigma website as a starting point, and then add the nuances of the fourth game later. But for this, you need a person who has the time and desire to do this painstaking work. The resulting alpha version should be provided to several experts for review, and then to the general public (in case they have any more suggestions). After making corrections, you'll have a fan-made guide. The question is, who is that person? Personally, like most people, I'm willing to play the role of the general public (unfortunately, I don't have what it takes to be an expert).

That's right, Optimal!! We need to develop our forum, not go around looking for information on all sorts of websites!!

So, what's the hold-up? Develop it, and here's a great opportunity. You can also participate in Tournaments, write Walkthroughs, and so on