Complex sentence: Alvin Achenbaum, President of the Achenbaum Institute of Marketing, began his marketing and advertising career in 1956 at McCann-Erickson Worldwide.
Split into simpler sentences: Alvin Achenbaum, is the president of the Achenbaum Institute of Marketing. Achenbaum began his marketing and advertising career in 1956 at McCann-Erickson Worldwide.