Valimiki speaks many profound things in just a few words. In the first verse Valmiki calls Narad as thoughtful mediator, studious sage in scriptures, knower of truth and untruth, excellent thinker, and sublime and expert enunciator. Narad is glorified because Valmiki later asks some questions to Narad. Those readers who are not well aware of who Narad is may wonder, "So what if somebody called Narad said this? What is the guarantee of the accuracy of his statement?" By glorifying Narad, the Ramayan clearly shows why Narad's word carries weightage. It is also worth being noted that Valmiki does not write paragraphs after paragraphs describing about Narad. Rather, in just a few words, he makes it very clear as to why he asked the questions to Narad. Usually when people speak few words, then it is often not clear as to what they are trying to say. They need to explain a lot to clarify their point. However, Valmiki makes his point clear in just a few words.
In some verses starting from the second verse, Valmiki lists some qualities and asks Narad as to who has these qualities. These verses make the purpose of Ramayan very clear. We see that the purpose is to show as to how a good human being should behave because the qualities listed in Valmiki's questions to Narad are all good. Often people write stories and the moral of the story is not clear because of which the story is interpreted in different (often contradictory) manners by different critics. But Valmiki does not leave any chance for misinerpretation. Some writers write in the beginning itself what the purpose of their writing is. Making purpose explicit in the beginning can be considered a good essay writing skill but not a good story writing skill. A good story should be such that the story itself should make the purpose clear. This is what Valmiki does because the question-answer session between Valmiki and Narad is a part of the story.
I will write more later.