So bare with me as I am going to break this down as much as I can so it makes sense.
Analysis - I assume this means your findings or feelings about the short story in writing
"Analyze how the author, Edgar Allen Poe, reveals the unnamed narrator and any significant characterization throughout the short story."
So you are trying to see where in the short story the author gives hints or ideas about who the narrator is. Characterization can be any important detail you find to stand out.
The characterization that you find is probably what relates to the meaning of the short story all together. So I am assuming what they are asking is what characteristics of the unnamed narrator reveal who it maybe? Or what characteristics associate with the short story all together.
I hope this helps I really tried to break it down and have it make sense. If you still need help let me know and I will do my best!