You may also want to consider doing an internship at a publication you hope to work for full time in the future to make connections with editors and other writers at the publication. Many of these internships will likely not be paid, at least not at first. Be prepared to receive compensation in the form of connections and contacts. But be wary of being taken advantage of as free labor. If you feel uncomfortable working for free, try to find internships that pay.
Those scenarios might have sounded like a lot of work to you, especially when considered alongside marketing programs that provide more immediate gratification -- like list purchasing, PPC, or trade show marketing that deliver names and email addresses in mere minutes. Often, content marketing is used when businesses realize those programs are either ineffective, too expensive, not scalable, or all of the above. Here's what I mean, using the "infographic generator" example above for demonstrations.