I've now gained enough rep to be able to close questions, edit everywhere, and review.
What is there to prevent me from abusing my powers? (i.e. from voting to close good questions)
The intent of this question is to learn how to use my powers for good; I've already read the FAQ and the pages on when to edit, close, etc. But I still don't understand it all that well.
Whose responsibility is it to correct me, if I go astray?
Is there a way to get feedback on whether I'm voting to close good questions?