It carries the idea of "giving him a start" -- a first chance.
Many times, unknown people cannot get a first chance (to act in a movie, to get a book published, to get a good job in a special career.) This is sometimes because they have no experience, but in other cases (acting in movies, book publishing) it is because no one wants to risk money on a person whose appeal to the public is unknown.
No one can tell if the movie-going audience will take a liking to a new actor; no one can predict if the book-buying public will sweep the shelves clear of a new author's book.
It is much easier for a movie studio to cast Leonardo DiCaprio in a role -- they're sure he'll be "box office." It is an easy call for a book publisher to invest money in a Stephen King novel -- it's sure to be a best seller.
This is frustrating to the unknown newcomer. He can't get a chance; he can't get started. No one will give him his "break;" no one will get him started on the road to success.
But sometimes an unknown will find someone who'll take a chance on him and get him started in the film business or in the publishing field. Sometimes an unknown will find somebody who will give him his start, give him his big break, get him started on his career, start him in the film industry.
Student or Learner