Amazon Category Research Select the right 3 Amazon categories for your book. This is a one-time, high-stakes decision—categories can't easily be changed after publishing, and 27% of KDP categories are "ghost categories" that don't actually work. Purpose Answer one question: Which 3 categories should this book be in? This skill does NOT cover keywords (separate skill) or book descriptions (separate skill). Just categories. When to Use This Skill - "Which categories should I choose for my book?" - "I'm publishing on KDP and need to pick categories" - "Is [category name] a good category?" - "How…