Deeply researched UX case studies (47 and counting) that break down real product flows: checkout, onboarding, sign-up, screen by screen, with the reasoning behind what works and what doesn't.
Seeing real product decisions dissected in detail, not generic 'best practice' advice.
Designers who learn best from studying real, specific examples over abstract principles.
Free to read; some deeper reports are paid.
10,000+ hours of research packed into 47 case studies.