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do you mean get your check mark?
On the left had side it says "premium"
just click that and go through the steps.
It is 10 HBD/month right now, but more than pays for itself.

How does it pay for itself? What is it? Why do it? How does it work?

under premium it shows you all the benefits you get.
also a lot of the community only upvotes other premium members.
also the leo.voter account will upvote premium member content posted from the InLeo interface (threads and long form)
It has been discussed many times on the AMA.
There was just an X space last week and an threadcast that talked a lot about it.

I think the the extra characters plus being able to edit makes it more than worth it.

Thank you!