Reddit reviews Panel Discussions: Design In Sequential Art Storytelling

Scott McCloud is one of the standards, definitely start there! Here's a list of some of the more granular/weird ones that are on my shelves:

• Panel Discussions (lots of great topics like page breakdown, pacing, using your gutters, etc)
  
• The Will Eisner Books (Comics & Sequential Art, Graphic Narrative and Storytelling, Expressive Anatomy. I've only read the 1st two, but they're fascinating looks at the older-style black and white layouts, with lots of good tips)
  
  • ***these use examples from Eisner's life, so 1930s-2005. The older ones are less-than-politically-correct, and the publisher addresses it in the forward, but still, CW.
    
• Wonderbook (this is just FUN fiction writing theory, written by the guy who did Annihilation)
  
• The Comics Journal (you can subscribe to this at your local comic book store through Diamond. Full of industry talk!)