What is the best way to sell yourself as a specialist?

Question

Marketing

Please advise some book that helped you personally learn how to earn more as a programmer. Or maybe not a book, but something else, maybe personal experience. I work as a freelancer, so the relationship with the recruiting department is probably beyond the scope of this question.

Answer 1

it’s better to sell
me at a higher price for my first job, when they said that I could set up Linux in the office and the Internet with a local network on it, no one looked at the diploma
so: “not drills, but holes”, “not cosmetics, but the hope of meeting you”. .. nothing changed

Answer 2

Bid higher