At my rope's end with trying to run an OSR, could really use some help
For the past month or so, I've been preparing to run an OSR campaign. In particular, I'm trying to run Swords and Wizardry. I know many DMs try to "over prepare" and get in a sort of "preparation paralysis". I've been doing my best to avoid it. But I realized last night that I'm in an enormous state of anxiety with the whole thing, that I feel like I cannot run a campaign.
My issues stem ENTIRELY from the rules of Swords and Wizardry. This has nothing to do with the actual campaign I'm trying to run.
My biggest issue is I can't find a place in the rulebook that tells me exactly how things are supposed to work. For example, Armor Class. I get it, I know what it is. But what exactly modifies your armor class? At the top of my head, I believe its your dexterity modifier, and your armor...and I think that's it? But I cannot find ANY section in the Swords and Wizardry rulebook that tells you "Armor Class: here's everything that interacts with it". And that REALLY bothers me. It gives me anxiety and makes me worry I'm not going to remember something when DMing.
I've tried looking at other systems (though tbh I REALLY want to run Swords and Wizardry), and none of the rulebooks seem to not have this issue. The ONLY one that did was Castles and Crusades, which had an Armor Class section and then highlighted basically every single thing that could affect it. Castles and Crusades doesn't seem to be for me though.
I've been talking Armor Class, but tbh it's only the tip of the iceberg. There's To-Hit modifiers, Damage modifiers, and that's not even counting skills and stuff. Don't forget Ancestries bonuses...
To summarize, my issue is that there seems to be so many modifiers for so many things, and I just can't remember them all, and they're not in one single place. They're scattered all over the rulebook. This paralyzes me. The idea of running a session and forgetting how to do a certain thing...it makes me feel fake. Like I'm an idiot who doesn't know how to run these games.
I know many of you might be thinking "Don't worry, it's on the sheets. You don't have to calculate it every single time or anything". But the problem is, my confidence is so low, I'm not even sure I'll be able to get the sheets right. I'm worried I'll have forgotten SOMETHING. Or when someone levels up, I'll fuck it up and give someone the wrong numbers.
Sorry for the venting. I REALLY want to play Swords and Wizardry in particular. In theory it looks like the perfect game for me. I just can't remember all the rules and stuff, and it's never organized in one spot.
I know some of you might also be thinking "Well it's RULINGS OVER RULES, so just make a ruling!" And fair enough. If I was hypothetically in a situation not covered in the rules, or just one in general that has no ruling, I should make that call. I agree. But I feel like that's not where I am with this. Instead I'm struggling on the very basics.'
I want to play classic campaign modules so badly, and I want to do it on Swords and Wizardry specifically. But right now it just feels impossible for me. Any help or advice is appreciated.