I'm not particularly rule-bound, but I do ask that you follow two simple ones.
1. No hostility. If another member says something with which you disagree, fine. You may say so, but do so respectfully. Too many boards out there are sunk by flame wars & rude or demeaning commentary.
2. If you are about to spoiler, post a warning. I personally don't get it (I read endings first), but many people are anti-spoiler. Please respect that.
Beyond those requests, I think the rest is pretty much standard stuff. Contact a mod if you need anything.