So you got into NYU. Congratulations! Now what? Let us tell you all about the nitty gritty details of changing your major, navigating the Liberal Studies Core program, celebrating the weekend in NYC, and making lasting friendships.

On Dec. 15 of my senior year of high school, I opened an acceptance letter to the school of my dreams: NYU. “Congratulations” jumped out of the phone screen. I rejoiced, but...