Just curious, what do you write?
Most of what I've done has been working as a technical advisor for TVs and movies. My connections in both is through family and friends. Sometimes it means going on location with crews, and taking a little time to research the local nuances of how aspects of the job were handled during specific eras. You'd be amazed at how much it's the same everywhere, and different at the same time. Even the terminology is critical in recreation of actual events, and even fiction. It's mistakes that can destroy an entire story.
Even though most people don't see, or understand the mistake, there are those who see it, and lose interest. As an example, in Titanic, DeCaprio was talking about the Chippewa Flowage in Wisconsin. When he said the lines, I nearly choked.
The Titanic went down in 1912. The dam on the Chippewa river, which created the Chippewa Flowage wasn't even built until 1923.
One of the big problems that I see happening, and have worked to correct, is when writers put together a story that supposedly took place 40 to 50 years ago, and they somehow include technology in the story that didn't even come into existence for decades. I worked on one story, as an example, where a cop in 1961, radioed in to the station and asked for a SWAT team. Reality is, they didn't exist. The first SWAT team was developed in LA in 1966, in response to the Watts riots.
You'd be surprised at how many of these things need to be corrected to insure a show is as accurate as possible.
Rest assured, you don't get rich doing it, but it's fun, and you get to meet some interesting people. I'm about ready to end my days doing it, because I don't particularly like climbing on a plane and going somewhere that's kind of in the boonies for a few days. Especially when it's cold out.