I've read this immensely helpful book on plot. It's called Plot (Elements of Fiction Writing) by Ansen Dibell. It helped me so much. I was stuck with basically this vague idea of a few characters and a kingdom, but everything was so unclear that I just couldn't wrap my brain around it enough to write anything that I didn't cross out immediately. I was actually flinching at everything I wrote. I don't know what changed, but after reading a few chapters ideas just kept spilling out. Ideas that might not be able to make it all the way, but I still saw the potential. I've never read anything about writing before this. I always thought it was sort of pointless. Why read about learning to write when you can write and learn how to write? It really got my wheels turning, though. I recommend it to people who struggle as I do with it. Are there any critical books anyone has read on this topic?