He could ask people for help, ask him how they got certain answers, and ask them to explain how they got their answers.
The effect that this response has on the speaker is that the speaker’s mental state shifts more and more toward madness.
The raven is constantly repeating the same word - nevermore. In the beginning, the narrator just thought it was a weird coincidence that the bird should say that one single word, but as time passes by, the weight of that word becomes unbearable as the narrator realizes that this word can be applied to all of his questions. So as time goes by, the narrator becomes more and more depressed about not being allowed to see his beloved and thus he falls into madness.
He could not imagine the possible danger he could face. This means that he did not prepare properly.
what story? if you can please copy and paste it so we can see it and try to help you.