Complex sentence: After graduating from the University of British Columbia with a commerce degree he started a maintenance company out of his basement and eventually became a self-made millionaire with diversified business interests including transportation, maintenance and real estate development.
Split into simpler sentences: After graduating from the University of British Columbia with a commerce degree, he started a maintenance company out of his basement. He became a self-made millionaire with diversified business interests including transportation, maintenance and real estate development.