Complex sentence: Elsey started working in the footwear industry at 15 as stock boy for GallenKamp Shoes in Fredericksburg, Virginia, where he worked full-time before graduating from Stafford Senior High School in 1983.
Split into simpler sentences: Elsey started working in the footwear industry at 15 as stock boy for GallenKamp Shoes in Fredericksburg, Virginia. He worked full-time at the Gallenkamp shoe store in Fredericksburg before graduating from Stafford Senior High School in 1983.