Terquem - I had players explaining stuff to me when I ran a couple of PlayByPost games here on the Pathfinder forums. And I had limited options to just the Core Rulebook!
I just ran a Swords & Wizardry session today at lunch for 3 players with a total of two sessions experience between them. I was trying to figure out the AC table (I'd been using the descending system, and this adventure used ascending). Nobody was an expert in this game. But the Cleric rolled a 1 and lost her mace while fighting a zombie. Everybody laughed!
I would just find the system/rule set you like and go with it, whether you're GMing or playing. And let the chips fall where they may. I plan on taking the S&W group over to Pathfinder after we finish Grimmsgate. Then I'll see which system they liked more - the older, rules-light one, or the weighty, complex Pathfinder one.
I try to reference things by Gygax' book because that was the idea behind this thread. But you need a sense of context for some of it. Like the ridiculous requirements in his Outline of Mastery.
I didn't work that hard on my Master's Thesis!