Quick writer tip: How can you get a ton of info across in a few short words without the infamous “info dump”? Use an offhand remark.
Example: Harry is one of the characters in your WIP. He has a history of falling from grace. He was a successful businessman with a wife a kids. The economy crumbled in 2008, he lost his job and his home. His wife divorced him and took the kids. He developed an addition to alcohol and became homeless, working at low odd jobs. Last anyone heard he was living out of his car.
You want to get this information across to the reader fast. You have a couple of choices: wordy narration, wordy dialog between a couple of characters, or an offhand remark. Instead of the first two, how about something simple. “Harry is down to his last friend—Jim Beam.”
Example: Sue is an actress who will do anything to get a part in a movie. She started out with the best of intentions and a heart full of integrity. But her popularity slipped and so did her income. Now it’s all she can do to make a living in B- and C-grade movies.
You can tell her backstory through narration or dialog, or use an offhand remark: “She performs best between the sheets.”
Here’s the point. If it takes 100 words to say something, figure out how to say it in 50. If it takes 10 words, say it in 5. If the backstory is not critical in its entirety, use an offhand remark and move on.