Considering that most marketing involves some form of published media, it is almost (though not entirely) redundant to call 'content marketing' anything other than simply 'marketing'. There are, of course, other forms of marketing (in-person marketing, telephone-based marketing, word of mouth marketing, etc.) where the label is more useful for identifying the type of marketing. However, even these are usually merely presenting content that they are marketing as information in a way that is different from traditional print, radio, TV, film, email, or web media.
Business 2 Community. This is a great place to network with other business professionals, engage with their articles, contribute guest posts and submit your own content to be shared in the forums if you get accepted. They openly encourage readers to use the platform to establish themselves and increase their exposure, which makes it a perfect fit for learning how to drive traffic to your blog from the community.
Cafe Press: This website allows you to create digital designs that can then be sold on the platform. You'll earn a commission for everything that sells and you'll never have to deal with logistics like printing, warehousing and customer service. If you have some graphic design skills, then this is a great potential source for your web-based income.