Every resource founders actually use, in one library.

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

1. A ready-to-use set of interview scripts (discovery, validation, and jobs-to-be-done) with probing questions built in, so you... CleverX Template · 1 to 2 pages · Starting Up User Interview Script Template CleverX
2. A quick, scannable checklist for running interviews well, covering open-ended questions, avoiding leading the witness, and... ProductPlan Article · 10 min read · Starting Up 9 Tips for Better Customer Validation Interviews ProductPlan
3. A discovery-focused interview template that keeps questions on behaviours and experiences rather than reactions to your... Great Question Template · 1 to 2 pages · Starting Up Customer Discovery Interview Template Great Question
4. A useful counterweight to the raw MVP idea, drawing on stories from Airbnb and WeWork about building the smallest thing people... Lenny's Newsletter Podcast · ~15 min read · Starting Up Building Minimum Lovable Products Jiaona Zhang
5. Often your first product does not need code, and a shared Notion page or database can stand in as the whole thing while you... notion.com Tool · Starting Up Notion notion.com
6. A validation walkthrough written for the Indian context, covering landing pages, coming soon fake doors, and pre orders with... Salaah School of Startups Article · ~12 min read · Starting Up How to Validate Your Startup Idea in India Salaah School of Startups
7. The most common way founders fool themselves about PMF is believing the next feature will fix weak retention. Chen shows with... andrewchen.com Essay · ~1,800 words · Starting Up The Next Feature Fallacy Andrew Chen
8. Olsen gives you a full framework (the Product-Market Fit Pyramid) for getting to fit deliberately rather than by luck: target... Dan Olsen (dan-olsen.com) Book · ~336 pages · Starting Up The Lean Product Playbook Dan Olsen
9. Butterfield pivoted a failing game into Slack by keeping the one thing the team could not stop using, the clearest example of a... Masters of Scale (Reid Hoffman) Podcast · ~37 min · Starting Up The Big Pivot, with Slack's Stewart Butterfield Reid Hoffman
10. A concrete, step-by-step account of collecting real pre-sale money before building, from a founder who actually did it. Unlike... Indie Hackers Article · ~12 min read · Starting Up $1,400 in pre-sales, step by step Indie Hackers community
11. A long-form interview with the author of The Mom Test for when you want to hear the ideas in conversation. He goes deeper on... The Learning Leader Show Podcast · ~60 min · Starting Up How To Talk To Your Customers (The Mom Test) Rob Fitzpatrick (with Ryan Hawk)
12. A head-on comparison of the exact question you are asking, useful as an orientation before the deeper resources. It draws out... Bundl Article · 12 min read · Starting Up B2B vs B2C Venture Validation: Key Differences Bundl
13. A structured, free program that reverse-engineers how B2B startups actually find product-market fit, built from patterns across... First Round Course · multi-part guide · Starting Up The PMF Method First Round
14. Aulet, who runs MIT's entrepreneurship center, lays out how to do primary research properly: observe, listen, and interact with... VentureWell (Bill Aulet, MIT) Article · medium read · Starting Up A Practical Guide to Primary Market Research Bill Aulet
15. Written by an investor who founded and sold a marketplace himself, this is a structured handbook covering business models,... Version One Ventures Article · ~45 min read · Starting Up A Guide to Marketplaces Boris Wertz and Angela Tran
16. Grinda has backed over a thousand marketplaces, and his blunt take is that roughly 95 percent are demand constrained, not... Fabrice Grinda Essay · ~30 min read · Starting Up Lessons Learned Building Online Marketplaces Fabrice Grinda
17. Udemy's cofounder explains, with real numbers, how they hand recruited supply when cold calls failed, even creating a course... The Hustle Article · ~15 min read · Starting Up How Udemy Found Their First 1,000 Instructors Sam Parr
18. Video · ~35 min watch · Starting Up How to Kickstart and Scale a Marketplace Business (talk) Lenny Rachitsky
19. Video · ~50 min watch · Starting Up The Ultimate Guide to Two-Sided Marketplaces with Jeff Jordan Jeff Jordan and Harry Stebbings
20. Kromatic works with corporate and startup teams on lean experiments, and this piece is precise about the difference and the... Kromatic Article · Starting Up Wizard of Oz Prototyping vs. Concierge Test Kromatic
21. A structured how-to you can follow, covering when to run a Wizard of Oz test, the steps, the tools, and the pros and cons.... Learning Loop Template · Starting Up Wizard of Oz Experiment (play) Learning Loop
22. This entry frames the Wizard of Oz test as one experiment in a wider validation toolkit, with clear guidance on cost, evidence... Kromatic (The Real Startup Book) Template · Starting Up Wizard of Oz (The Real Startup Book) Kromatic (The Real Startup Book)
23. A practical walkthrough of when a concierge MVP is the right fit, when it is not, and how to actually run one. It is helpful... Upsilon Article · Starting Up What Is a Concierge MVP and When to Use It Upsilon
24. A tight 17 minute talk that distills The Mom Test into the one habit that matters most: stop presenting your idea, because... The Conference by Media Evolution Video · 17 min · Starting Up Rob Fitzpatrick: (not) presenting your idea Rob Fitzpatrick

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