I've started rewriting The Long Road again. I haven't got very far, but it feels… good, just to be working on it again. I figured out how and where to start it, that introduces the characters without being all info-dumpy.
That being said, I'm thinking a lot about backstory.
Obviously, these characters have history, both of their own and with each other. I've been doing a lot of research into how to incorporate that into the story. And let me tell you, the internet is god damn useless. "Work backstory into the narrative in bits and pieces." No shit. You don't want to stop the action to explain how your characters know each other, or how they got where they are now. Some sites recommended the use of a prologue. As far as I know, prologues should really only be used when there's some crucial worldbuilding that needs to be done up front. Usually that's a sci-fi/fantasy thing, where the reader needs to know something about the world in order to not be completely lost. This is not that kind of story.