A "rant" is passionate, typically angry, speech or writing about a particular topic.

The topic of this rant from 2013 is the failure of marketing schools to prepare students for the new internet-based marketing industry. 

Take a deep breath and try to read as emphatically as you can.
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"Unfortunately, the curriculum taught in today’s universities does not reflect the social media reality. Not one résumé from a 2013 marketing graduate on my desk contains a single social media account, blog or website URL. These are bare-minimum requirements to work as a marketer today. When asked, every candidate has openly admitted that they don’t read any blogs.

"The interview process proved what the résumés hinted at—that today’s marketing graduates have virtually zero Internet marketing training or knowledge.