Rotation Term Help

[Fiscr]

I understand your problem, sometimes i'm lost too with all those fancy terms

Essentially, a rotation is a sequence of skills you use repeatedly when fighting an enemy. Most of the time you don't spam one skill on mobs, but a couple of them in a certain order depending on the situation. This splits up into single target rotation for single targets and AOE rotation for multiple targets (usuall 3+). An opener would be the first skill or first set of skills you use when engaging an enemy. Openers are for example used to stack up buffs quickly for higher damage right from the start. A simple example would be a blackmage using fire III at the start of the battle to get all three astral fire stacks right in the beginning instead of building them up one by one with fire.