In your opinion, did Poe's use of a first-person narrator make "The Black Cat' more interesting to read? Support your answer with three examples from the story.

Yes, Poe's use of a first-person narrative makes "The Black Cat" more interesting to read.

The three supportive examples are:

Explanation:

'The Black Cat' is a short Gothic story written by Edgar Allan Poe. The story is narrated by an anonymous narrator, who is to be sentenced to death the next morning. The story is narrated using firs-person point of view, and  Poe uses an 'unreliable narrator' in first-person narration.

Using an 'unreliable narrator' and first-person point of view is skillfully pulled-off. Reading a text, which is narrated by an unreliable narrator is interesting to readers as it tends to create suspense in the story. First suspense is build at the very beginning of story, when narrator narrates and confesses about his crime of murder and at the same time tries to persuade his readers of his sanity.

Textual evidences:

'FOR the most wild yet most homely narrative which I am  about to pen, I neither expect nor solicit belief. Mad indeed  would I be to expect it, in a case where my very senses reject  their own evidence. Yet, mad am I not—and very surely do I  not dream. But to-morrow I die, and to-day I would  unburden my soul.'

Secondly, when narrator unfolds his purpose of narrating his story is interesting.

'My immediate purpose is to place before  the world, plainly, succinctly, and without comment, a series  of mere household events. In their consequences, these  events have terrified—have tortured—have destroyed me.'

It becomes interesting to readers when the readers are introduced to the cat- Pluto. The name Pluto is the name of the god of underworld who oversees witches. And black cat is mostly alluded to susperstitous belief that they are connected to witches. This builds interest in readers mind to keep on reading.  

'In  speaking of his intelligence, my wife, who at heart was not a  little tinctured with superstition, made frequent allusion to  the ancient popular notion, which regarded all black cats as  witches in disguise.'