Every resource founders actually use, in one library.

What founders use most, ranked by how many answers lean on it.

1. A clean, practical playbook for the mechanics: where to place the door, what to measure, and how to avoid annoying the people... Learning Loop Article · ~12 min read · Starting Up Fake Door Testing: What It Is and How to Run One Learning Loop In 4 answers
2. A useful correction for founders chasing a market-wide 40 percent before a single cohort loves the product. The authors argue... Andreessen Horowitz (a16z) Article · ~2,000 words · Starting Up Product-User Fit Comes Before Product-Market Fit Peter Lauten and David Ulevitch In 4 answers
3. Lenny interviewed dozens of people who built Airbnb, DoorDash, Thumbtack, Etsy, and Uber, then distilled how they actually got... Lenny's Newsletter Article · ~25 min read · Starting Up How to Kickstart and Scale a Marketplace Business (Part 1) Lenny Rachitsky In 4 answers
4. Cohen bootstrapped two companies past a hundred million in revenue, and he is blunt that a typical launch converts around one... A Smart Bear (Jason Cohen) Essay · 15 min read · Starting Up Excuse Me, Is There a Problem? Jason Cohen In 4 answers
5. The other side of the question, honestly told, including when a coordinated launch is actually the wrong move. It shows how... Lenny's Newsletter Article · 15 min read · Starting Up How to Successfully Launch on Product Hunt (When It's Right for Your Startup) Leo Bosuener In 4 answers
6. A practical, structured playbook for the exact fear in this question: users quietly leaking away. Lenny breaks retention into... Lenny's Newsletter Article · ~15 min read · Starting Up How to Increase Your Product's Retention Lenny Rachitsky In 4 answers
7. This is the two sentence post that named the whole category you are deciding about, from an OpenAI co-founder. Read it to... Andrej Karpathy (X) Thread · 1 min read · Starting Up The original "vibe coding" tweet Andrej Karpathy In 4 answers
8. A clear, tool by tool guide to turning an idea into a working prototype in minutes, aimed at people who do not code. It sorts... Lenny's Newsletter Article · 25 min read · Starting Up A guide to AI prototyping for product managers Colin Matthews In 4 answers
9. Context on how Indian founders are actually using no-code to launch without engineering teams, with real examples. It is useful... KrASIA Article · Starting Up Indian Founders Say Yes to No-Code Tools Shreya Asopa In 4 answers
10. Once no-code has carried you to traction, this is a grounded guide to building the early team you eventually need, including... Lenny's Newsletter Article · Starting Up Hiring your early team Lenny Rachitsky In 4 answers
11. A free, fast preview of the Refactoring UI mindset that you can apply this afternoon. It gives you seven fixes (use more white... Refactoring UI (Medium) Article · 10 min read · Starting Up 7 Practical Tips for Cheating at Design Adam Wathan and Steve Schoger In 4 answers
12. A simple, repeatable four-step method for making hiring decisions instead of going on gut feel, which is where costly mis-hires... Geoff Smart and Randy Street Book · Book, around 200 pages · Starting Up Who: The A Method for Hiring Geoff Smart and Randy Street In 4 answers
13. A venture firm's field guide to engineering hiring for founders, covering the full arc from defining the role to sourcing,... CRV Article · Long read · Starting Up How to Hire Engineers: A Guide for Founders CRV In 4 answers
14. A clean primer if you have never run a test. It defines the three pieces that matter (a facilitator who does not lead,... Nielsen Norman Group Article · ~12 min read · Starting Up Usability Testing 101 Kate Moran In 4 answers
15. A tight distillation of what YC drills into every batch, with launch quickly and iterate as a core plank. It is the checklist... Michael Seibel (michaelseibel.com) Article · 10 min read · Starting Up YC's Essential Startup Advice Geoff Ralston, Michael Seibel In 4 answers
16. A transcript of a real switch interview so you can hear what a great customer conversation actually sounds like. Reading it... Jobs to be Done Radio Article · Starting Up The Jobs to be Done Mattress Interview Jobs to be Done Radio In 4 answers
17. Cagan argues your job is to deliver outcomes, not to maintain a prioritized list of everyone's requests. That is the backbone... Silicon Valley Product Group (Marty Cagan) Essay · 10 min read · Starting Up Product Roadmaps Marty Cagan In 4 answers
18. A counterweight for when you overcorrect into safe, small, derivative ideas. Graham describes why the biggest ideas often feel... Paul Graham (paulgraham.com) Essay · ~12 min read · Starting Up Frighteningly Ambitious Startup Ideas Paul Graham In 4 answers
19. This one focuses squarely on the method your short answer champions, building TAM up from real customer counts and pricing... Qubit Capital Article · Starting Up Bottom-Up Market Sizing for Startups Qubit Capital In 4 answers
20. Dunford reframes competitors as competitive alternatives, starting with the status quo of doing nothing, which is the real... April Dunford (aprildunford.com) Article · 12 min read · Starting Up Positioning and Competition April Dunford In 4 answers
21. The hype cycle names the exact trap in your question: the peak of inflated expectations, the trough of disillusionment, then... Gartner Article · 10 min read · Starting Up Gartner Hype Cycle Research Methodology Gartner In 4 answers
22. Kevin Hale distills a pitch into seven questions investors need answered, and 'why this team' is one of them. Use it to place... Y Combinator Startup Library Article · ~15 min read · Starting Up How to Pitch Your Company Kevin Hale, Y Combinator In 4 answers
23. Kelly's argument is that some technological directions carry their own momentum, so you can reason about where things are... Kevin Kelly (kk.org) Book · 336 pages · Starting Up The Inevitable: Understanding the 12 Technological Forces That Will Shape Our Future Kevin Kelly In 4 answers
24. Twice a year Evans publishes a free deck reading the macro and strategic shifts in tech, strong on second order effects, not... ben-evans.com Article · 90+ slides · Starting Up Benedict Evans: annual tech trend presentations Benedict Evans In 4 answers

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