What does value-first contents mean on social media?

[Brajet]

On social media, there is nothing that moves the audience than giving them the value that they want first. That's why it is better for those that want to grow their traffic to be involving in value-first contents.

These contents will give the audience the needed attention. Examples of some of these contents include giving audience tips, using case studies and as well giving free tools.

What others do you know and how effective are they?