I have only ever watched a video once (and that was for working out a Twintania divebomb strategy, since you can't work those out on the fly) and have no problem executing all mechanics in the game. Granted I also have a lot of experience raiding in other games... the amount of times you'll see me messing up mechanics or dropping considerable dps/hps to them is also approximately zero. This sounds arrogant as hell (and hey it kind of is), but either I'm uniquely "lucky", or there are a hell of a lot of transferable skills which I have picked up.

Hell, mechanics such as Blighted Bouquet are standard in other MMOs so it was literally a case of taking what you have learned before and transferring it directly.