In all cases, though, the shooter would be well-advised to read the rule book ahead of time
Well, there's nothing wrong with that, but I have found a lot of new gamers trying to read rules before they even show up for a match get all kinds of crazy misunderstandings.
Think about how difficult it would be to read the rules of American football before you had ever even seen a game. Without a clear picture in your head of what the game looks like, it would be nigh impossible to really get anything from the rule book. I know I would find it challenging, and I read rules for a living! (I'm a lawyer.)
I would encourage anyone interested in any gun game to go and at least watch ASAP. You're not wrong that reading the rules or having good fundamentals is helpful... but all of that gets easier once you see a match or game or whatever.