Every resource founders actually use, in one library.

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

1. A practical, founder-written primer on the money side of going full-time, how to think about your own finances so a lean... Hampton (joinhampton.com) Article · ~2,500 words · Starting Up Personal Finance for Startup Founders Dylan Eastwood & Ankur Nagpal
2. Torres lays out a clean ladder for testing willingness to pay without waiting to finish the product: ask about past spending,... Product Talk Essay · ~10 min read · Starting Up Ask Teresa: How Can You Test a Customer's Willingness to Pay? Teresa Torres
3. Before you write a line of code, you can test whether a marketplace has a pulse by matching the first buyers and sellers... Learning Loop Article · ~10 min read · Starting Up Concierge MVP: run your marketplace by hand before you build it Learning Loop
4. When people happily use your product for free, the fix is often to stop assuming the user and the payer are the same person.... Isaac Jeffries Essay · ~7 min read · Starting Up Customers, End Users and Beneficiaries Isaac Jeffries
5. This essay gives you a clean, three-part test for a timing bet: is the enabling technology actually ready, has customer... Wing Venture Capital Essay · ~10 min read · Starting Up Startups and Timing: On the "Why Now" for New Businesses Tanay Jaipuria
6. Graham names the three things that actually convince investors: formidable founders, a promising market, and (usually) evidence... Paul Graham Essay · ~15 min read · Starting Up How to Convince Investors Paul Graham
7. This is the sharpest short statement of the trade you are weighing: if you bet on a trend before the market exists, the... Chris Saad, Startup Snippets Essay · ~5 min read · Starting Up Being too early is the same as being wrong Chris Saad
8. This is a clean, concrete example of reading a policy change as demand rather than a headache. Instead of treating new rules as... Andreessen Horowitz (a16z) Article · ~15 min read · Starting Up Brazil's Surprising Fintech Tailwind Angela Strange and Flora Oliveira
9. Amy Hoy names the exact trap in this question: the person who swears they would pay "if only you added X" is, as she puts it,... Stacking the Bricks Essay · Starting Up Vaccinate Yourself Against Crappy Customer Feedback Amy Hoy
10. This piece sorts research methods along attitudinal versus behavioral and qualitative versus quantitative, so you can see... Nielsen Norman Group Article · About 12 minute read · Starting Up When to Use Which User-Experience Research Methods Christian Rohrer
11. This piece names the exact trap you are describing: in India, open disagreement often reads as rude, so a prospect will say yes... Sales & Marketing Management Article · 8 minute read · Starting Up Selling to India: Avoid Assumptions Gunjan Bagla
12. Most founders either stop at two chats with friendly users or interview forever and never ship. Seaman, a UX researcher, gives... Medium Essay · About a 10 minute read · Starting Up The Right Number of User Interviews Mitchel Seaman
13. The thing that drains most founders is treating research as a big occasional project, so it always feels heavy. Teresa Torres... Product Talk Article · About a 10 minute read · Starting Up This Keystone Habit Will Fuel the Rest of Your Continuous Discovery Habits Teresa Torres
14. The people who cancel are telling you exactly what is broken, and most founders never ask. This Lean B2B guide shows how to... Lean B2B Article · ~15 min read · Starting Up How to Run a Customer Exit Survey to Improve Retention Etienne Garbugli
15. Most ICP advice assumes a clean B2B buyer, which is exactly what breaks when you sell to Indian small businesses. This piece... LinkedIn Article · ~8 min read · Starting Up Selling to SMBs in India: it's difficult but not impossible Aditi Puri Batra
16. This is the cleanest breakdown we found of who is actually involved in a purchase: economic buyer, champion, end user,... Dock Article · About a 12 minute read · Starting Up The 6 Types of B2B Buyers (and how to sell to them) The Dock Team
17. Van der Kooij's Winning by Design frameworks are the practical standard for thinking about who you sell to in a real SaaS deal,... Winning by Design Book · About 211 pages · Starting Up Blueprints for a SaaS Sales Organization: How to Design, Build and Scale a Customer-Centric Sales Organization Jacco van der Kooij and Fernando Pizarro
18. This is the clearest piece we found on the actual question: when a tight ICP has become too tight and you are leaving real... A Smart Bear Article · About a 15 minute read · Starting Up Adjacency Matrix: How to expand after PMF Jason Cohen
19. This is the practical step after you accept that not everyone in your industry is your customer. It walks through turning a... Startups.com Article · About 12 minute read · Starting Up The Ideal Client Profile Is Your Startup's North Star (Stop Ignoring It) Ryan Rutan
20. This piece lays the B2B and B2C cases side by side so you can see that the axis of specificity is genuinely different: B2B... Geeks for Growth Article · About a 10 minute read · Starting Up How Do Startups Market B2B vs B2C Differently? Geeks for Growth
21. This is the sharpest answer to the actual worry: Cohen names the sample-of-one problem directly and unpacks the seven hidden... A Smart Bear (Jason Cohen, founder of WP Engine) Article · ~2,500 words, 12 minute read · Starting Up "I scratched my own itch" isn't good enough Jason Cohen
22. Most teams drift not because they disagree on who the customer is, but because nobody wrote down who the customer is NOT. This... M1-Project Article · Roughly a 10 minute read · Starting Up Negative Buyer Persona: What It Is and How to Create One Anton Mart
23. This gives you a concrete, bottom-up way to check whether your niche can actually fund the next stage, instead of guessing.... ktulrich.com Article · Article, approx. 10 minute read · Starting Up TAM, SAM, SOM, and the Beachhead Market: Estimating Market Size Karl T. Ulrich
24. This lays the two axes side by side: narrowing by industry (vertical) versus spreading across markets and geographies... Aexus Article · ~8 min read · Starting Up What is the difference between horizontal and vertical GTM strategies? Aexus

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