Every resource founders actually use, in one library.

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

1. An investor's view of why founder-market fit is a top filter at the earliest stage, when there is little else to judge. It... F2 Venture Capital Article · 8 min read · Starting Up Founder Market Fit Matters F2 VC In 3 answers
2. This is about the unique insight half of 'why you': seeing a market others dismiss and having the conviction to build there. It... First Round Review Article · 20 min read · Starting Up Future Founders, Here's How to Spot and Build in Nonobvious Markets Elad Gil In 3 answers
3. Each year a16z partners publish the problems they think startups will tackle next, which is less a prediction and more a map of... Andreessen Horowitz Article · 20 min read · Starting Up Big Ideas in Tech a16z partners In 3 answers
4. Intel's former CEO defines the "strategic inflection point," the moment a real shift changes the fundamentals of a business,... Andrew S. Grove (Penguin Random House) Book · Book (~210 pages) · Starting Up Only the Paranoid Survive Andrew S. Grove In 3 answers
5. This is the internal memo Butterfield sent his team two weeks before Slack's launch, written from inside the wreckage of... Medium Essay · Starting Up We Don't Sell Saddles Here Stewart Butterfield In 3 answers
6. This is Product Hunt's own pre-launch checklist, covering exactly the assets you need lined up weeks ahead: gallery images,... Product Hunt Article · Starting Up Preparing for launch Product Hunt In 3 answers
7. This is the data behind if you talk less than the customer, you're doing it right. Gong analyzed hundreds of thousands of real... Gong Labs Article · ~10 min read · Starting Up Mastering the talk-to-listen ratio in sales calls Gong Labs In 3 answers
8. This is narrower than the cadence advice elsewhere on this list: it is specifically about what makes the follow-up email itself... Gong Article · 8 min read · Starting Up Scientific Tips for Writing the Perfect Follow-Up Sales Email Gong In 3 answers
9. This breaks down how early sales teams actually build and work a target account list, including how to find contact information... First Round Review Article · 12 min read · Starting Up Designing Your Sales Stack so that Customers Come to You Max Altschuler and Jorge Soto In 3 answers
10. A bootstrapped founder's step by step account of building a short list of exactly-fit prospects and personally emailing each... Indie Hackers Thread · 10 min read · Starting Up How to get your first 10 customers with cold email William Paul In 3 answers
11. Pete Kazanjy, who has built and scaled multiple B2B sales orgs, gives a founder-focused breakdown of how to get specific enough... Lenny's Podcast Article · 10 min read · Starting Up Defining your ideal customer profile: Pete Kazanjy's perspective Pete Kazanjy In 3 answers
12. This is a practical, step by step walkthrough with real before and after examples of cold emails, useful when you want a... Woodpecker Article · 12 min read · Starting Up How to Write a Cold Email: 6 Steps + Templates Woodpecker In 3 answers
13. A real teardown of real cold emails sent to a real, busy recipient, with his honest reaction to each subject line. Reading... Nick Gray Essay · Starting Up Feedback on 4 Cold Emails To Me From Ramit's Brain Trust Nick Gray In 3 answers
14. Gong analyzed tens of millions of real sales emails, so instead of taking someone's word for what good personalization looks... Gong Article · 9 min read · Starting Up Does Cold Email Even Work Any More? Here's What the Data Says Gong In 3 answers
15. Directly useful if part of your targeting question is whether you should even be emailing the CEO. It looks at how seniority... Gong Article · Starting Up Do execs really reply to cold email? Here's what the data says Gong In 3 answers
16. Ellis lays out the 40 percent test, the survey question and threshold he found across hundreds of startups for knowing you have... GrowthHackers Essay · Starting Up Using Product/Market Fit to Drive Sustainable Growth Sean Ellis In 3 answers
17. Gupta names the Mom Test problem directly, that people in interviews behave like your mom and unconsciously lie to keep you... Aakash Gupta Essay · Starting Up Customer Interviews: Advanced Techniques Aakash Gupta In 3 answers
18. Amy Hoy and Alex Hillman built the Sales Safari methodology, and a business, around finding what an audience already complains... Stacking the Bricks Essay · 12 min read · Starting Up Updating the Sales Safari System for 2023 Alex Hillman In 3 answers
19. A structured framework for CM1/CM2/contribution margin thinking that applies directly to a D2C brand regardless of market, the... Eightx Article · D2C Ecommerce Unit Economics 2026: The Complete Founder's Framework Eightx In 3 answers
20. A neutral, feature-by-feature comparison of the three tools every Indian founder actually considers, saves you from three... G2 Article · D2C Zoho Books vs. Tally vs. Vyapar: How Do They Compare? G2 In 3 answers
21. A CA firm's practical picks rather than a vendor's self-promotion, useful second opinion when deciding what to actually... PKC India Article · D2C Best Bookkeeping Software in India: Best Picks (2025) PKC India In 3 answers
22. The clearest breakdown of turning creative testing from a guessing game into a repeatable system, isolate one variable, define... Insense Article · D2C How to Build an Ad Creative Testing System with UGC in 2025 Insense In 3 answers
23. A category-by-category map (photography, ad creative, support, forecasting) rather than one long undifferentiated tool list,... Nightjar Article · D2C 10 Best AI Products for Ecommerce Businesses in 2026: A Category-by-Category Stack Guide Nightjar In 3 answers
24. A round-up of what real ecommerce founders recommend on Reddit rather than vendor marketing, useful reality check on where AI... Superpower Thread · D2C Best AI Tools for Ecommerce: Reddit Picks Superpower In 3 answers

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