I've forgotten whose recommendation I followed to find this Scrivener tutorial by Jason Hough, but I liked it a lot. Even though I've used Scrivener for a while, I learned some good techniques from Jason's approach to chapter and scene organization.

I mention it more because if you've never used Scrivener and are curious, it covers the most useful 20% without getting bogged down too much in the deeper layers. And since he's screen-sharing his way through the presentation, you can just watch the first part to get a quick overview of what Scrivener is and why you might want to use it.