Complex sentence: Peter Keating, a popular but vacuous fellow student, has graduated with high honors, and moves to New York to take a job at the prestigious architectural firm of Francon & Heyer, where he ingratiates himself with senior partner Guy Francon.
Split into simpler sentences: Peter Keating, a popular but vacuous fellow student, has graduated with high honors. He too moves to New York to take a job at the prestigious architectural firm of Francon & Heyer, where he ingratiates himself with senior partner Guy Francon.