Manuscript Makeover: Revision Techniques No Fiction Written Can Afford to Ignore by Elizabeth Lyon. This book is more foundational and comprehensive than Self Editing for Fiction Writers (which I also highly recommend). I especially appreciated the emphasis on characterization as it relates to plot, setting, and theme. Each chapter includes detailed checklists that I plan to revisit as I finish revising my novel.
The Poetry Of Yelp: How The Reviews Site Became A Massive Platform For Creativity