Internship?

Can you get paid as an intern? Can you work anywhere as an intern as long as they take you in? What is an internship? Cause i want to work in a restaurant and maybe get paid if they do. How do i do that though? Do i just go in the restaurant that i want and ask the manager if i can work as an internship?
Update: I want to learn how to run a restaurant thats why. So i don't know how to do that
Update 2: who should i go to in order for them to hire me as internship to learn about running a business and what it takes to get to that position
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