In the great Gatsby How does Nick describe himself in the beginning of the novel

Nick Carraway spends most of the first three pages of The Great Gatsby describing himself and his background, and then tells the reader how he ended up alone in a house in West Egg one summer. But it is not a physical description; we get no idea of his appearance. While he is clearly going to talk about some past events, we don't know how long ago they occurred. What his self-description does convey is that something transformative has occurred.
Nick's first passage refers to youth and immaturity, to criticism and passing judgment, and to listening to bores. We wonder, then, if the story he is starting will be about judgment or be boring. Since he says he is trying to follow his father's advice, we suspect he did not.
Nick graduated from Yale like his dad and served in the military in Europe in the Great War. "I came back restless." The Mid-west, where he grew up with "advantages," no longer appealed to him. Nick, then seven years out of college, moved to New York. He decides to spend the summer in a "commuting town" rather than the hot city as he starts his new profession as a bond trader. His family seems to have approved of the career choice despite being surprised.
It is not until almost the end of chapter one that Nick tells us that he came East to escape the idea people had that he was engaged.
That information helps to contextualize what he had said on page two about the "intimate relations of young men." After the summer in the East, he says, "I wanted no more riotous excursions with privileged glimpses into the human heart."
That is his set up for introducing Gatsby. It seems the human heart we're going to hear about will not be Nick's.
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