As I have stated elsewhere, it is not so much I have trouble with any of the examples that actually do exist. Those I find were fairly well written actually. It is just that they cover such a narrow scope of the obvious things a mod script writer might be interested in doing.
I agree with this. I did the "beginner script tutorials" expecting them to allow me to jump right in and do all kinds of cool stuff. The Hello, world! tutorial was a good start, but some further tutorials using different functions/script types would have gone a long way.
This is more anologous to attempting to decipher a foreign language without a reference, with no “Rosetta Stone.”
I disagree with this, as I don't feel its the case here. If you've played the game at all, you have the perfect papyrus Rosetta Stone. All the working-in-game-scripts the guys at Bethesda wrote are at your finger tips in the ck. Though you may not always find an example of exactly what you want to do, chances are good that you can find an example thats at least close.
As to your original post, I have primarily been messing around with scripted spells so far and can help you out if you still need it. I've got this thread "followed" and I will try to respond to any pertinent posts in the future.
I think you'll want to use Cast to apply your ability on the Actor, and DispelSpell to remove it.
If your spell is adding an ability you'll want to use AddSpell and RemoveSpell instead.
http://www.creationkit.com/AddSpell_-_Actor , http://www.creationkit.com/RemoveSpell_-_Actor