Welcome to the Forum.
Your idea is a decent one, I’m just not sure we really have the capacity to do that very effectively with this platform. It would seem the most likely way to do that would be to create a “Q&A” group and put everything in there…but the groups section doesn’t really get noticed. Plus we do have the Ultimate Beginner Meta Thread, which seems to function pretty well, and of course the Mises Wiki, particularly the Argumentation category. I would definitely encourage you to create an account there and see what you might be able to contribute.
As for your question, some context would be nice…but on the surface it would sound like a simple statement of the fact that “for every buyer there is a seller.” To me that statement is basically saying that “the collective amount spent on wages can’t be more than the amount received in income”…in other words, wages=income.