Every resource founders actually use, in one library.

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

1. A user-research veteran's workflow that forces exact quotes and catches contradictions. lennysnewsletter.com Article · How Founders Use AI How to do AI analysis you can actually trust Caitlin Sullivan, Lenny's Newsletter In 5 answers
2. How to hand Claude a report or deck from any conversation and schedule it to run every week, with no builder at all. claude.com Article · How Founders Use AI Claude Cowork and chat are now one Claude Anthropic In 5 answers
3. Anthropic on letting Claude act in the browser without approving each step, with a safety classifier checking every action. claude.com Article · How Founders Use AI Claude in Chrome is generally available Anthropic In 5 answers
4. Microsoft's own post on Copilot in Excel's newest features: get data, clean data, skills you teach it once, and an interactive... techcommunity.microsoft.com Article · How Founders Use AI Beyond Analysis: Copilot Gets to Work in Excel Microsoft Excel team (Brian Jones) In 5 answers
5. A UX-research leader (ex-Uber Eats, BetterUp) gives founders a concrete three-step discovery process, including how to recruit... First Round Review Article · ~20 min read · Starting Up A founder-friendly playbook for early customer discovery First Round Review (Jeanette Mellinger) In 4 answers
6. A clear, operator-written guide from a respected SaaS-analytics company on defining and using an ICP to focus scarce startup... ChartMogul Blog Article · ~12 min read · Starting Up Without an ideal customer profile (ICP), your growth is just guesswork ChartMogul In 4 answers
7. One of the few pieces that clearly untangles ICP vs persona vs JTBD without jargon, so founders stop conflating them. Useful as... netretention.io Article · ~14 min read · Starting Up Ideal Customer Profiles (ICPs), ABM, JTBD and Personas: knowing your customer Net Retention In 4 answers
8. The most practitioner-friendly deep dive into JTBD, with interviews and case studies on applying it to real products. Free to... jtbd.info / alanklement.com Book · ~230 pages · Starting Up When Coffee and Kale Compete: Become great at making products people will buy Alan Klement In 4 answers
9. YC is the canonical authority on early-stage team formation, and this is their direct playbook for the exact problem a... YC Startup Library Article · ~12 min read · Starting Up How to Find a Technical Co-Founder Y Combinator In 4 answers
10. Paul Graham's short, opinionated take on naming from someone who has seen thousands of startups, canonical, no-fluff, and free. paulgraham.com Article · 8 min read · Starting Up Startup Names Paul Graham In 4 answers
11. Julian Shapiro's deeply practical framework for landing pages, including the desire-minus-friction conversion model, a... julian.com Article · 25 min read · Starting Up How to build a landing page (Startup Handbook) Julian Shapiro In 4 answers
12. Harry Dry's core copywriting rules distilled with dozens of real examples, the fastest way to level up your writing from vague... Marketing Examples Article · 8 min read · Starting Up How to write copy that sells (three rules) Harry Dry In 4 answers
13. The definitive beginner walkthrough of finding and prioritising keywords, from the tool most SEOs actually use, authoritative... Ahrefs Article · 25 min read · Starting Up Keyword Research: The Beginner's Guide by Ahrefs Sam Oh (Ahrefs) In 4 answers
14. Based on studying 100+ consumer companies, Lenny shows that lasting growth comes from becoming world-class at one growth... Lenny's Newsletter Article · ~20 min read · Starting Up The Growth Engine: Kickstarting & Scaling a Consumer Business (Step 6) Lenny Rachitsky In 4 answers
15. Concrete retention benchmarks and cohort-analysis methods gathered from dozens of top companies, so you can tell a healthy... Lenny's Newsletter Article · ~20 min read · Starting Up How the Best Companies Measure and Improve Retention Lenny Rachitsky In 4 answers
16. The definitive framework for building products people return to without paid nudges, the Hook Model, backed by a million-plus... Portfolio / Penguin (nirandfar.com) Book · Book (~256 pages) · Starting Up Hooked: How to Build Habit-Forming Products Nir Eyal (with Ryan Hoover) In 4 answers
17. Battle-tested referral advice from the person who turned Airbnb's host referral program into its biggest driver of supply... Lenny's Newsletter Article · ~20 min read · Starting Up Building a Referrals Program Lenny Rachitsky In 4 answers
18. A primary-source, founder-written account of how India's largest and most profitable brokerage actually makes money and thinks... zerodha.com Article · blog post · Starting Up Z-Connect: Business Updates & Why We Do What We Do Nithin Kamath In 4 answers
19. Stripe's founder guides are clean, trustworthy primers on the core financial concepts every founder must track, burn, runway,... stripe.com Article · guide library · Starting Up Startup Financials: Burn Rate & Runway, Stripe / Founder Guides Stripe In 4 answers
20. A clear, vendor-agnostic explainer of why the Delaware C-corp is the default for high-growth, investor-backed startups and how... stripe.com/resources Article · Guide · Starting Up How to form a Delaware corporation (C corp), Stripe guide Stripe In 4 answers
21. The clearest distillation of Naval's philosophy on wealth, leverage, and, crucially, inner peace. Free to read online, it... navalmanack.com Book · medium · Starting Up The Almanack of Naval Ravikant: A Guide to Wealth and Happiness Eric Jorgenson (curating Naval Ravikant) In 4 answers
22. The definitive case that undistracted, focused work is both increasingly rare and increasingly valuable, a direct competitive... calnewport.com Book · long · Starting Up Deep Work: Rules for Focused Success in a Distracted World Cal Newport In 4 answers
23. A thoughtful investor-authored take on the real risks of solo founding, isolation and the echo chamber, and how to engineer the... newsletter.angularventures.com Article · medium · Starting Up Solo Founder Syndrome (Even If You're Not Alone) Angular Ventures (The Angle) In 4 answers
24. A YC partner who has read thousands of applications tells you plainly what separates the founders who get in from the ones who... YC Startup Library Essay · Long-form essay / talk · Starting Up How to Apply and Succeed at Y Combinator Dalton Caldwell In 4 answers

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