Every resource founders actually use, in one library.

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

1. Video · about 1 hour · Starting Up Mastering onboarding | Lauryn Isford (Head of Growth at Airtable) Lenny Rachitsky and Lauryn Isford In 2 answers
2. YC's David Lieb walks through cohort retention: watching each week's new users and asking how many actually come back. For a... Y Combinator Startup School Video · ~20 min · Starting Up How To Improve Cohort Retention David Lieb In 2 answers
3. Video · about 22 minutes · Starting Up Consumer Startup Metrics | Startup School Tom Blomfield In 2 answers
4. A16z boils the whole decision down to one honest rule of thumb: usage-based pricing tends to fit products whose main user is... Andreessen Horowitz (a16z) Essay · About 8 minute read · Starting Up Usage-Based Pricing Is Popular, But Is It Right For You? Our Rule of Thumb Tugce Erten and Mark Regan In 2 answers
5. Before you agonize over subscription versus per-transaction, this piece shows the common middle path so you do not force... Chargebee Article · About 7 minute read · Starting Up The Great Middling: Hybrid Pricing Model and its Growing SaaS Relevance Harikrishna In 2 answers
6. A business built on a few big enterprise deals quietly builds a trap: if one account walks, your revenue caves. This piece... Lighter Capital Essay · Starting Up How SaaS Startups Can Minimize Customer Concentration Risk Lighter Capital In 2 answers
7. When you bolt a services layer onto a product business, the number investors actually stare at is your blended gross margin,... Bottom Up by David Sacks (Substack) Essay · about 12 min read · Starting Up The Gross Margin Problem: Lessons for Tech-Enabled Startups David Sacks In 2 answers
8. This is the reference definition founders actually cite when they argue about take rate, and it gives you the honest benchmark... Andreessen Horowitz (a16z) Essay · Short reference entry, a few minutes · Starting Up The Marketplace Glossary: Take Rate Li Jin In 2 answers
9. SaaSBoomi is the community of Indian SaaS founders, so when its hosts work through pricing plans (product, perceived value,... SaaSBoomi Podcast · Starting Up Getting SaaS Pricing Right (SaaSBoomi Podcast) SaaSBoomi (hosts Arvind Parthiban and Varun Shoor) In 2 answers
10. This is a focused, plain-language piece on the exact trap in the question: a low blended CAC that quietly counts customers you... Eightx Article · Short read (10 to 12 min) · Starting Up What Is Blended CAC vs Paid CAC? Matt Putra In 2 answers
11. If you sell a one-time product and think LTV is a SaaS thing, this piece does the reframe cleanly: for a physical-goods brand,... Top Growth Marketing Article · Long read, about 20 to 25 minutes · Starting Up Unit Economics for DTC Brands: The Complete Guide Jack Paxton In 2 answers
12. Bessemer built this from years of their own portfolio data, and it is the piece that answers the real question hiding inside... Bessemer Venture Partners (Atlas) Essay · long read plus benchmark charts · Starting Up Scaling to $100 Million Mary D'Onofrio, Bessemer Venture Partners In 2 answers
13. This is the most concrete, no-fluff answer we found to the actual mechanics question: how much do I give up to get a customer... SaaStr Article · Short read, about 6 to 8 minutes · Starting Up Dear SaaStr: What's a Reasonable Discount for an Annual Contract? How About a 3-Year Contract? Jason Lemkin In 2 answers
14. When you need a one-time cash injection without giving up equity, this is an actual India-based platform you can approach,... Recur Club Tool · Platform, application-based · Starting Up Recur Club (revenue-based financing and debt for Indian founders) Recur Club In 2 answers
15. This is the sharpest short answer to the real fear behind the question: how do I not go broke funding this. Graham reframes the... paulgraham.com Essay · ~1,200 words, about a 6 minute read · Starting Up Ramen Profitable Paul Graham In 2 answers
16. A free, no-signup calculator that forces you and your co-founder to actually weigh the inputs (idea, roles, who is full time,... Foundrs Tool · ~10 minutes to work through · Starting Up Foundrs Co-Founder Equity Calculator Foundrs In 2 answers
17. This is the exact list a founder gets handed once a term sheet lands, written by YC Continuity's general counsel after hundreds... Y Combinator Startup Library Article · ~10 min read · Starting Up Series A Diligence Checklist Jason Kwon (Y Combinator) In 2 answers
18. You do not want to build a three-year model from a blank sheet, and you also do not want a generic one-size template that does... Forecastr Template · 12 templates, make a copy and fill in · Starting Up Forecastr Free Startup Financial Model Templates (Excel and Google Sheets) Forecastr In 2 answers
19. The Indian mirror to the answer: Kamath built Zerodha to India's largest broker taking zero outside capital, and he is precise... Forbes India Article · 12 min read · Starting Up I wonder why there are only a few businesses like us, built to generate profits and not raise venture capital: Nithin Kamath Nithin Kamath (interviewed) In 2 answers
20. This is the India proof that bootstrapping first opens the door to a raise rather than closing it, told by the Accel partner... Accel India (SeedToScale) Article · 12 min read · Starting Up Girish Mathrubootham shares his learnings on building and scaling Freshworks Anand Daniel In 2 answers
21. This is one of the only Indian seed funds that publishes hard numbers for when they want to hear from you, so you can benchmark... Blume Ventures Article · 5 min read · Starting Up Blume Ventures: How to reach us (seed traction benchmarks by model) Blume Ventures In 2 answers
22. This is the reference point for what a clean deal looks like, written by the people who have watched hundreds of Series A term... Y Combinator Article · 12 min read · Starting Up A Standard and Clean Series A Term Sheet Y Combinator In 2 answers
23. Feld (co-author of Venture Deals) does the arithmetic most founders never run: on a $5M investment for 50% and a $20M exit, a... Feld Thoughts Essay · 10 min read · Starting Up To Participate or Not (Participating Preferences) Brad Feld In 2 answers
24. This is the clause-by-clause decoder written for Indian reality, not a US template retrofitted. It runs the founder-payout math... The Founder's Guide to Startup Funding (Indian Ecosystem) Article · 35 min read · Starting Up Term Sheet Analysis: The Most Important Document You'll Sign (The Founder's Guide to Startup Funding in the Indian Ecosystem) Niraj Kumar In 2 answers

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