Every resource founders actually use, in one library.

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

1. Once you know your curve should flatten, the next question is where it should flatten, and this piece answers it with concrete... Lenny's Newsletter Article · ~10 min read · Starting Up What is good retention? Lenny Rachitsky In 9 answers
2. The global playbooks assume a US-style buying process; this one is written for the Indian enterprise reality, where the sale... Blume Ventures Article · 25 min read · Starting Up The Rough Guide to Building an Enterprise SaaS Dhandha in India Blume Ventures (with Aakrit Vaish, Haptik) In 9 answers
3. A real company showing its ICP before and after, including the messy middle where they were guessing. The point that narrow... Product for Engineers (PostHog) Newsletter · ~12 min read · GTM Defining our ICP is the most important thing we ever did Andy Vandervell In 9 answers
4. Covers ICP definition, the PBC structure for running a sales call, pilot design and weekly forecasting in one place, with... First Round Review Article · long read · GTM The Most Common Go-to-Market Questions This Expert Gets from Early Founders First Round Review with Emery Rosansky In 9 answers
5. The reference explanation of all eight letters from the people who own the methodology, free to read. Use it as a deal... MEDDICC Article · long read · GTM MEDDIC / MEDDPICC Sales Methodology and Process MEDDICC In 9 answers
6. Poyar replaces the sales funnel with a five stage new user journey (discover, start, activate, convert, scale) and attaches... Growth Unhinged Newsletter · 10 min read · GTM Your guide to PLG benchmarks Kyle Poyar In 9 answers
7. A short, specific list of what to instrument on a self-serve funnel, including time to activation and time to convert, which... Amplitude Article · 12 min read · GTM Top 10 Metrics to Measure Freemium and Free Trial Performance Carmen DeCouto In 9 answers
8. The most complete breakdown of what goes into a health score: which four to six categories to weight, how to segment scores by... Gainsight Article · 12 min read · GTM Customer Health Score Explained: Metrics, Models and Tools Gainsight In 9 answers
9. The clearest single document on what a revenue data model should look like end to end, from lead through renewal and expansion.... Winning by Design Report · 46 page PDF · GTM The Bowtie Standard Winning by Design In 9 answers
10. The best plain English description of what a sales ops function is for, written by someone who rebuilt one from scratch. Useful... First Round Review Article · 18 min read · GTM The Company-Changing Magic of Sales Operations Done Right Don Otvos In 9 answers
11. The five part narrative structure (name the shift, name winners and losers, show the promised land, position capabilities as... Mission.org Essay · 11 min read · GTM The Greatest Sales Deck I've Ever Seen Andy Raskin In 9 answers
12. A working glossary of the words on your cap table, from the company that stores most of them, so the jargon stops getting in... Carta Article · Wealth Equity 101 for founders and employees Carta In 9 answers
13. OpenAI's own list of the Codex launches: Codex in the cloud, a refreshed CLI and code review, and Sign in with ChatGPT for... openai.com Article · How Founders Use AI DevDay 2026 Recap OpenAI In 9 answers
14. Survey finding that 24% of US AI users use an agent regularly and 32% have let AI act for them without final approval, which is... menlovc.com Article · How Founders Use AI 2026: The State of Consumer AI Menlo Ventures In 9 answers
15. The most systematic step-by-step process for de-risking an idea, built around the Lean Canvas. Where The Lean Startup gives... LEANSTACK Book · ~240 pages · Starting Up Running Lean Ash Maurya In 8 answers
16. Twenty founders describe the pivotal moments on their path to fit, and a recurring theme is why the right founder for the right... First Round Review Article · ~25 min read · Starting Up The Only Way to Win: Advice for Founders From Founders First Round Review In 8 answers
17. The most-quoted primary source on why founders should launch fast and iterate, short, canonical, and from the co-founder of YC.... paulgraham.com Article · ~8 min read · Starting Up Startups in 13 Sentences Paul Graham In 8 answers
18. The official, primary-source guide straight from Product Hunt, it dispels myths and sets realistic expectations, unlike the sea... Product Hunt Article · guide / multi-page · Starting Up Product Hunt Launch Guide Product Hunt In 8 answers
19. Steli Efti (YC alum, co-founder of Close CRM) is one of the most trusted voices on startup outbound and cold email, practical,... Close Article · article series · Starting Up The Close Sales Blog (Steli Efti on cold email & founder sales) Steli Efti In 8 answers
20. A behavioral, dead-simple cash-management system used by over a million businesses to stay permanently profitable. Perfect for... mikemichalowicz.com Book · book (~224 pages) · Starting Up Profit First: Transform Your Business from a Cash-Eating Monster Mike Michalowicz In 8 answers
21. The canonical, no-nonsense overview of how seed fundraising works, written by a former YC president who has seen thousands of... Y Combinator Startup Library Article · 20 min read · Starting Up A Guide to Seed Fundraising Geoff Ralston In 8 answers
22. Judging whether people will actually change their behavior comes down to how well you can hear intensity in what they say, and... deployempathy.com Book · Full book, roughly 250 pages · Starting Up Deploy Empathy: A Practical Guide to Interviewing Customers Michele Hansen In 8 answers
23. This is the book most modern cold outbound advice quietly borrows from, so reading the source is worth it. Its "Cold Calling... Amazon Book · ~208 pages · Starting Up Predictable Revenue: Turn Your Business Into a Sales Machine with the $100 Million Best Practices of Salesforce.com Aaron Ross and Marylou Tyler In 8 answers
24. When you are the only one selling something like your product, cost-plus and competitor benchmarks give you nothing to anchor... Wiley (2016) Book · Book, ~240 pages · Starting Up Monetizing Innovation: How Smart Companies Design the Product Around the Price Madhavan Ramanujam and Georg Tacke In 8 answers

Show the next 24