Content Marketing is any marketing that focus on sharing media or publishing content with users
This will build the audience and engage them, eventually turn them into customers or prospects by delivering “consistent, ongoing valuable information” about your product or services.
In fact, if you become the expert or guru for that area, you can be the top notch content marketer with proper marketing strategies and planning.
I have come across few resources and eBooks that i am willing to share with you all:
1.How To Build and Operate Content Marketing Machine (by Marketo)
2. 100 Content Marketing Examples (by Content Marketing Institue)