Complex sentence: He turns to a life of crime, producing and selling methamphetamine with a former student, Jesse Pinkman (Aaron Paul), with the aim of securing his family's financial future before he dies.
Split into simpler sentences: He turns to a life of crime, producing and selling methamphetamine with a former student, Jesse Pinkman (Aaron Paul). White's primary goal, when he begins manufacturing the methamphetamine, is securing his family's financial future before he dies.