Write & Sell Your Damn Bookby Paul Jarvis
This book kicks you square in the ass to start your book, finish writing it, and get it out there for other people to read. It's super short, on purpose. Around 5,000 words total. Ain't no fluff here, just the meaty bits (which is saying a lot, since the author is vegan). It's broken into 13 (lucky) tiny lessons, with super actionable steps at the end of each one, plus a few additional resources.