What I would like to add to this discussion is, even if you dont understand every class, your own class if you have played it to lvl 75 you have had plenty of time to READ the tool tips on your skills, if you do not understand them , ask in kin or here on the forums.
Inductions , big swirly circles under there feet and corruptions (bad guys versions of buffs) are a CRITICAL part of instance let alone raids. And mechanics that you should have encountered leveling up, so there is no real excuse for people who hit lvl 75 and do not know what skills to use to counter these.....
We understand, that raiding is not for everybody though, there is no forcing of anyone to come raiding if they do not want to, if you are worried about time constraints and the post does not say how long it is expected to be just ask.
We encourage people to come to instances like foundry or raids like draigoch or DN first as they are much easier and at least give you a feel for what is going on and why in a multiplayer enviroment.
This thread though was aimed at the people that want to come on raids, not ones that unfortuantly cannot for what ever reason. And it is pointing out if you come on raids without actually learning your own class then you are actually worse for the group than having no one in your place, as it will be assumed that you can do what you are asked to do. And if you do not then it can mean wipe out.
And raids are unforgiving, so if you want to raid help yourself by gearing as much as is possible, instance grouping as much as possible (only by working with others will you learn the strengths and weaknesses of other classes and players, as we all have different play styles and strengths even within classes) and most of all know your class and your skills, hunters are not just pew pew
Though we do not want to put anyone off trying raiding just please consider 11 other people have given up time and resources to do the raid as well, so please try to be on time and contribute as much as you can, and most importantly inbetween pulls if there was something you did not understand why we did it such a way , ASK, though sometimes you do wonder, normally the old addage is true, the only stupid question is the one that was not asked.