Yes--lots of skills, besides the ones you train, additional abilities also can be gained from items or potions.
--Targeting options-- Take the example of a buff or a healing spell. You might want to target yourself, any of up to 4 party members, or their pets (hunters and warlocks have pets.) Or you might need a damage spell, which has to target a specific mob (monster} and not another. When all pandemonium is breaking loose in a big fight, the ability to quickly and correctly select the target of a spell or ability makes a big difference.
And there are voice macros that can be helpful which tell your party you are under attack, out of mana, etc.
Melee fighting--right click or hot key to hit. Use special abilities as needed and possible.
Sounds easy and it is, but there are often various options available, and there is no such thing as a "dumb tank."
Casting--select target and spell.
You can also dance or flirt with players, give them a raspberry, cheer for them, etc.
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The question is not, Can they reason? nor, Can they talk? but, Can they suffer? ~Jeremy Bentham
