The lovesick and heartbroken poet asks (both directly and indirectly) a number of things of the raven, a symbol of death and decay.
The first question comes in the eighth stanza where the speaker asks for the raven's name. The following stanzas are formulated as ponderings, but since the poet chooses to think aloud, those statements may well be interrogative in nature: will the raven leave before I do? Did he learn that one word from some human somewhere?
Then, the speaker asks whether there will be healing for his broken heart, and quickly follows up with his question about Lenore's eternal rest.