Writing is a tough job, add to it the planning and promotion phase that takes several elements into account and you have quite a task ahead of you. It has been agreed upon by experts that more time should be invested in promoting your product than actually writing and publishing it. You have to get people to read your work, visitors to come to your website or blog. Otherwise, the whole point of content is moot. 

Objectives of the content, knowing your customers, tailoring your content to meet the expectations of customers in various marketing channels, curating content are just some of the expertise you need in this module. Blogging is a prerequisite for the content marketing module. You have to garner knowledge about blogs, content audits, building a target audience list to develop specialized skills as a content marketer.