The title says it all!

1. Headline
Never give away the key information in headlines
Use headlines to create interest so that you can bring people to
read your actual content
Headlines should be creative, simple and to the point

2. KISS
Keep your content simple and stupid
Example:
Consequences of Erudite Vernacular Utilized Irrespective of
Necessity
=
Problems with Using Long Words

3. Storytelling
No one wants to read or watch why your brand is better and why
they should buy your product or service
Indulge your clients in stories that resonate to them

4. Language
Speak your customer’s language
If you use your technical jargon or slang, they just won’t
understand. If you are marketing to different segments, optimise
your content for every segment

5. Call to Action
If you don’t ask people to do something, well, they won’t
Even charity blogs and vlogs ask you to donate in the end
Everything you write should lead to a call to action that is relevant
to your target audience