The modern American way is to announce it on a website, promise to make a movie, and do everything with crowd-founding and hire a bunch of college kids for nothing, plus two Mexicans. Actual knowledge of the business not required. See the current movie "The biggest little farm". https://www.sundance.org/projects/the-biggest-little-farm

The previous famous way was "Farmer John" near Chicago, which was similar, but more of a collective.