A Lack Of How To Sell The Art

I continue to be puzzeled, by the lack of survial tricks, that are not mentioned in the art magazines.
Artists have many creative ways to live and make their art.
The art magazines seem to focus on how to make the art, more than how to sell the art.
There's a large number of videos available on painting, but nothing on the selling part.
I say this often, I'll say it again,art is a business.
There should be more information available on how to survive and still produce the work.
The art mags could be a big help in this task.