- The Lean Startup by Eric Ries (Amazon, YouTube)
- Startup Playbook by Sam Altman (read online, also available in Spanish)
- Founders at Work: Stories of Startups' Early Days by Jessica Livingston (Amazon)
- Getting Real by 37signals (PDF)
- Zero to One: Notes on Startups, or How to Build the Future by Peter Thiel (Amazon)
- Chaos Monkeys: Obscene Fortune and Random Failure in Silicon Valley by Antonio Garcia Martinez (Amazon)
- The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers by Ben Horowitz (Amazon)
- Some More Things (additional posts that weren't included in The Hard Thing About the Hard Things) by Ben Horowitz (PDF)
- Lean UX: Applying Lean Principles to Improve User Experience by Jeff Gothelf (Amazon)
- Validating Product Ideas: Through Lean User Research by Tomer Sharon (Amazon) + accompanying resources (includes many links to articles, books, slides, and videos)
- Hooked: How to Build Habit-Forming Products by Nir Eyal (Amazon)
- Don't Make Me Think, Revisited: A Common Sense Approach to Web Usability by Steve Krug (Amazon)
- UX for Lean Startups by Laura Klein (Amazon)
- Extreme Programming Explained: Embrace Change, 2nd Edition by Kent Beck (Amazon)
- The Nature of Software Development by Ron Jeffries (Book)
- The Mythical Man-Month, 2nd Edition by Fred Brooks (Amazon)
- Who Moved My Cheese by Spencer Johnson (Amazon)
- How to Start a Startup essay by Paul Grahm. If you read only one essay, read this one!
- Y-Combinator essays by Paul Grahm, and the Y-Combinator startup library.
- How to validate a product without building it [link]
- How Airbnb solved the mystery of predicative pricing [link]
- Interaction design checklist [link]
- How to give a 90-second demo [link]
- How Not to Design a Mobile App [link]
- 7 Rules for Creating Gorgeous UI [Part 1, and Part 2]
- How to Start a Startup course at Stanford by Y-Combinator [link]
- Office Hours with Kevin & Qasar [YouTube]
- Jessica Livingston at Startup School 2012 [YouTube]
- The story of Watsi (a non-profit startup) by Chase Adam, a good motivational talk [YouTube]
- "1000 days of AirBnB", the story of AirBnb [YouTube]
- Jan Koum's talk (WhatsApp) demonstrates long term goals and keeping focus [YouTube]
- Michelle Zatlyn and Matthew Prince (CloudFlare) talk about team dynamics [YouTube]
- The User is Drunk [YouTube]
- Startup School talks [YouTube]
- Beyond Landing Pages: Five Ways to Find Out if Your Idea Is Stupid by Laura Klein [YouTube]
- User Interface Techniques by Janne Jul Jensen [YouTube]