This page is the Naxx start point for all OpEx members. Everything on this page is either mandatory or really close to it. It is your responsibility to read this info, watch the videos, and spend a few minutes learning what your class is (or is not) supposed to do. You won't get kicked out of the guild for not being the most awesomest supercool player ever... not even if you cause a wipe. However... if you wipe the raid because you were too lazy to read a couple of pages, watch a couple of videos, or buy flasks... then you're going to A) have a lot of frustrated people get angry with you and call you bad things, and B) not exactly be at the top of the list next time there's a raid forming.
1. All normal raid rules and requirements apply . I'm not gonna spend half the page on the fact that you need to bring flasks etc. We're all experienced raiders and know what is expected of us. Be on time, be reasonably close to your hitcap, bring wellfeds and flasks. (Plural - it's a big instance, you'll need at least 2)
