Hi I have recently started playing world of warcraft seriously, as before I just leveled a bit and gave up. I have now leveled a hunter to level 90 and I am about the start my adventure to level 100. My question is simply what role in a raid setting has the easiest time when performing their role in a raid? I am talking about ranged dps, healer, tank and melee dps unless there are more roles but from what I know their is not. I am planning on using a level 90 boost I got with my warlords of draenor and I am probably going to get to level 60 (I think) to get professions with my boost, is this still the way it goes? As a note I don't plan on playing my hunter.
So what role should I take in a raid if I want the easiest introduction into raiding?