i found the same explanation on this & it seems relevant to me according to my study & search.
Three types of content for content marketing
Story Telling – Don’t just present your content, tell a story with it. Give characters in the story names so that they are easily recognized and can be related to. Appeal to your audience’s sense of wonder and try to use literary elements that help paint pictures beautifully to your mind’s eye.
Creative content is engaging. Be sure to speak directly to your audience’s emotional state in order to drive your message home.
User-Generated Content – Websites that allow user-generated content receive a lot of traffic, have tightly-knit communities and a ton of pages that aid in organic marketing efforts.
Although user-generated content is valuable, some companies are worried about what will specifically be said in such content. Companies that provide great content and experiences shouldn’t worry too much, but if you still do, here’s a thought on how to get positive user-generated content: Specifically ask your audience a question on their favorite item relating to your company. For instance, in you were an online music store, you could ask your audience to write about their favorite album of the their favorite all-time band. Asking questions allows people to talk about themselves while the organization itself can receive insightful perspective.
Link Reviews – Do you often scour other blogs for information related to your industry? I assume all of you who are thought leaders do so. Giving credit where credit is due to others residing in your industry helps to show your credibility as a news source while it builds content for your website and possible relationships with competitors.
To create a link review: write an engaging headline, add some commentary and insight to your post and include a link to the original article. If your link review is optimized with your keywords, make sure it’s over 300 words in length to increase your odds of having it get ranked by Google.
An additional strategy for content marketing
Do not hesitate to repurpose and republish your content through different mediums. For instance, if you have a dozen free reports on interesting topics, take some of that information and create an audio or video podcast with it.
Using the different medium may bring in new audience members who strictly prefer it. Promoting and sharing media-rich content may also resonate with your audience more, and inspire them to share the content on your behalf because they see the value in it.