Complex sentence: Hastings began his journalism career as an unpaid intern for "Newsweek" magazine in 2002, and he was also a regular contributor to "Gentlemen's Quarterly" and a contributing editor at "Rolling Stone" magazine.
Split into simpler sentences: Hastings began his journalism career as an unpaid intern for "Newsweek" magazine in 2002. Hastings was also a regular contributor to "Gentlemen's Quarterly" and a contributing editor at "Rolling Stone" magazine.