This probably only applies at the release of each new expansion/tier, but how much time would you say you spend studying for WoW?
This includes but is not limited to:
- Reading about your class and its optimization in all aspects
- Reading/watching videos about raid encounters
- Reading/watching videos researching questlines/rep farms/anything else
Basically, just how much time you spend out of the game and researching things for the game.
Coming back and wanting to tank, I'd have to say it requires more out-of-game study than I've ever been used to. In pretty much all raiding regards, tanks (and other classes) are pretty much expected to have a certain level of study done before stepping foot into raids.
I think it's pretty safe to say that any Flex+ group, especially pugs, expects you to know the fights before hand and such (applies to all roles/classes).