Complex sentence: He also returned to working for the magazine business and worked for "Photoplay", "Shadowplay", and "Liberty" magazines, and was so financially desperate and he had to rely on old friends and acquaintances in order to get whatever jobs he could.
Split into simpler sentences: He also returned to the magazine business, working for "Photoplay", "Shadowplay", and "Liberty" magazines. He was so financially desperate that he had to rely on old friends and acquaintances to get whatever jobs he could.