Every resource founders actually use, in one library.

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

1. Ash Maurya, author of Running Lean, argues you can always find how a customer solves a job today, and that existing workaround... LEANFoundry Article · About a 10 minute read · Starting Up Find Better Problems Worth Solving with the Customer Forces Canvas Ash Maurya In 4 answers
2. This is the short, practical manual for actually doing a test yourself, no training required. Krug walks you through running a... Steve Krug (New Riders) Book · About 168 pages · Starting Up Rocket Surgery Made Easy: The Do-It-Yourself Guide to Finding and Fixing Usability Problems Steve Krug In 4 answers
3. This is the canonical framing for exactly your question: not all messy code is the same. Fowler splits debt on two axes,... martinfowler.com Essay · About a 5 minute read · Starting Up Technical Debt Quadrant Martin Fowler In 4 answers
4. Video · About 25 minutes · Starting Up Building Product Michael Seibel In 4 answers
5. This is the reference everyone quietly copies when they first try to write down their brand voice, and it is public, free, and... Mailchimp Content Style Guide Article · Starting Up Voice and Tone, Mailchimp Content Style Guide Mailchimp In 4 answers
6. Google tells you what to aim for, but Handley teaches you the actual craft of getting there: how to write something a human... Ann Handley Book · Starting Up Everybody Writes: Your Go-To Guide to Creating Ridiculously Good Content Ann Handley In 4 answers
7. Before any of your outreach copy matters, you need the right person's actual email, and Hunter is the most widely used,... Hunter.io Tool · Starting Up Hunter (Email Finder and Verifier) Hunter In 4 answers
8. Video · 6 min watch · Starting Up How To Cold Email Investors Michael Seibel In 4 answers
9. This is the canonical a16z reference that defines the marketplace vocabulary you actually need before you build a model: GMV vs... Andreessen Horowitz (a16z) Essay · Starting Up 13 Metrics Every Marketplace Company Should Track Jeff Jordan, Li Jin, D'Arcy Coolican, Andrew Chen (a16z) In 4 answers
10. Walling built and sold bootstrapped companies (including Drip) and has backed hundreds more through TinySeed, so this is... SaaS Playbook (Rob Walling) Book · About 200 pages · Starting Up The SaaS Playbook: Build a Multimillion-Dollar Startup Without Venture Capital Rob Walling In 4 answers
11. If a US fund pushes you toward a Delaware structure, this is the India-specific legal and tax manual for what you are actually... Treelife Article · 20 min read · Starting Up Flip Structure for Indian Startups: A Complete Guide Treelife In 4 answers
12. A practising senior partner spells out exactly why a raw US SAFE is dangerous for an Indian entity: it can be treated as a... Bar & Bench Article · 10 min read · Starting Up Convertible Notes and SAFE Notes in India: The Dilemma Madhavan Srivatsan In 4 answers
13. The clearest breakdown of how RBF actually prices out for an Indian startup: you repay roughly 1.10 to 1.15x the principal... Efficient Capital Labs Article · 10 min read · Starting Up Revenue-Based Financing in India: A Founder Guide Efficient Capital Labs In 4 answers
14. Once you have negotiated the pool size, this is the guide that stops the pool from becoming a tax trap for the very employees... Treelife Article · 25 min read · Starting Up ESOP Taxation in India: Complete Guide for Founders and Startups Treelife In 4 answers
15. This is the tool for the exact fight you are having: it scores each founder across Idea, Business Plan, Domain Expertise, and... Carnegie Mellon University Tool · 15 min read · Starting Up The Founders' Pie Calculator Frank Demmler In 4 answers
16. This is the operating manual behind the answer's core rule: don't run a remote team on vibes. GitLab runs 1,600+ people across... The GitLab Handbook Article · 25 min read · Starting Up Asynchronous communication for remote work GitLab In 4 answers
17. The founder who built a profitable, bootstrapped Indian giant to over a crore customers with zero venture funding and zero... Forbes India Article · Short read (about 8 min) · Starting Up I'm Proud That At Zerodha We Don't Have Growth Targets Nithin Kamath (interviewed by Forbes India) In 4 answers
18. Blank invented customer development, and this manifesto boils it into a short set of rules, starting with the idea that there... Steve Blank Essay · 12 min read · Starting Up Nail the Customer Development Manifesto to the Wall Steve Blank In 4 answers
19. Jackson breaks fit into levels and asks how acute the problem is, how reachable the audience is, and how differentiated your... Lenny's Newsletter Article · about 20 min read · Starting Up A Framework for Finding Product-Market Fit Todd Jackson (First Round Capital) In 4 answers
20. A step by step process for taking an idea to something people want without building the wrong product first. Maurya's mantra,... Ash Maurya (O'Reilly) Book · ~336 pages · Starting Up Running Lean (3rd Edition) Ash Maurya In 4 answers
21. A short, free primer straight from the person who coined the term, useful when someone on your team thinks an MVP just means a... Lean Startup Co. Article · ~8 min read · Starting Up What Is an MVP? Eric Ries Explains Eric Ries In 4 answers
22. A clean, practical playbook for the mechanics: where to place the door, what to measure, and how to avoid annoying the people... Learning Loop Article · ~12 min read · Starting Up Fake Door Testing: What It Is and How to Run One Learning Loop In 4 answers
23. The qualitative half of the answer, told through founders describing the moment things flipped: inbound you cannot keep up... Lenny's Newsletter Article · ~2,000 words · Starting Up What it feels like when you've found product-market fit Lenny Rachitsky In 4 answers
24. A useful correction for founders chasing a market-wide 40 percent before a single cohort loves the product. The authors argue... Andreessen Horowitz (a16z) Article · ~2,000 words · Starting Up Product-User Fit Comes Before Product-Market Fit Peter Lauten and David Ulevitch In 4 answers

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