Every resource founders actually use, in one library.

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

1. Ash Rust invests at pre-seed and has watched dozens of founders let a friendly pilot drift into a free forever engagement. His... Medium (Sterling Road) Essay · 8 min read · Starting Up Startup Sales: How to Get Pilot Customers to Pay Ash Rust
2. The YC essay tells you the rules; this shows you real founders following (and bending) them. These are 13 actual cold emails... OpenVC Blog Article · 12 min read · Starting Up 13 Cold Email Examples Sent to VC Investors OpenVC
3. Andrew Chen ran growth at Uber and a16z, and his core idea here, the Law of Shitty Clickthroughs, is exactly why a channel that... andrewchen.substack.com Article · Starting Up Every Marketing Channel Sucks Right Now Andrew Chen
4. Batko is a two-time founder and former Startmate CEO who has received thousands of cold emails, so he writes from the receiving... batko.ai Article · 15 min read · Starting Up Cold Email Templates for Founders: 5 Templates That Get Replies Michael Batko
5. This is the piece that separates organic word of mouth from an engineered viral loop, and shows you how to actually design one.... andrewchen.com Essay · Long essay, about 15 minute read · Starting Up What's Your Viral Loop? Understanding the Engine of Adoption Andrew Chen
6. This is the cleanest side-by-side we found on what you actually trade away going indirect: margin, customer contact, and... GTM Playbook Article · Long-form article, about a 12 minute read · Starting Up Direct Sales vs. Channel Sales: Choosing Your Route to Market in B2B SaaS James Doman-Pipe
7. SEO feeling slow usually means you are doing it one blog post at a time, and this essay covers the scalable side: generating... Knownful Essay · ~15 minute read · Starting Up What is Programmatic SEO and should your startup use it? Matthis Duarte
8. Most founders pick an ad budget by copying a percentage they read somewhere, which is exactly backwards. Rollins gives you a... Practical Marketing Article · Starting Up How Much Marketing Budget Does A Startup Need? Brandon Rollins
9. This lays out the case that your product can be its own distribution, so you sell less by design. It is aimed at exactly the... Bessemer Venture Partners Essay · About a 20 minute read · Starting Up 10 Product-Led Growth Principles Janelle Teng and Ethan Kurzweil (Bessemer Venture Partners)
10. Before you sink 50 to 120 hours into a launch, read this honest first-person account of what a launch actually returned across... Plain Sight Ventures Essay · Short essay, roughly a 6 minute read · Starting Up Is Product Hunt Worth It? Jason Walkow
11. This is the clearest essay on why a flattening cohort retention curve is the thing that actually matters, and it lives on... andrewchen.com Essay · ~12 min read · Starting Up Retention is King Jamie Quint
12. Most first-time founders either track nothing or drown themselves by logging every click, and this piece makes the case for the... Mean CEO Essay · Starting Up Event Tracking Strategy: What to Measure and Why Violetta Bonenkamp
13. This is the piece that answers the second half of your question head on: when is it too early to even care. Skok's site is the... For Entrepreneurs (David Skok) Essay · Starting Up Why Early-Stage Startups Should Wait to Calculate LTV:CAC, and How They Should Use It When They Do Jared Sleeper and David Skok
14. US benchmarks quietly assume US ACVs and US venture cash, so they mislead an Indian founder. This piece grounds the numbers in... upGrowth Article · Starting Up CAC Benchmarks for Indian B2B SaaS by ARR Band: The Real Numbers for 2026 Amol Ghemud
15. This gives you the mental picture and the evidence in one place: a bucket full of holes barely fills no matter how fast you... Amplitude Article · Starting Up The Leaky Bucket Problem: More Users Don't Mean More Long-Term Growth Noorisingh Saini
16. Most active-user counts quietly measure app opens, which is exactly the dishonesty this question is trying to avoid. This piece... Mixpanel blog Article · Starting Up Monthly active users (MAU): Definition, formula, and 2026 benchmarks Mixpanel
17. This is the honest counter-argument most growth advice skips: when you have low traffic, formal A/B tests usually cannot reach... Entrepreneur Essay · Starting Up The Case Against A/B Testing at Early-Stage Startups Andrew Cohen
18. Torres takes the next step after you accept you cannot reach significance: figure out what you are actually trying to learn,... Product Talk Article · Starting Up What to Do When You Don't Have Enough Traffic to A/B Test Teresa Torres
19. When a lot of your funnel lives on WhatsApp, in-store, or over a phone call, the clean website conversion metrics stop telling... Ginesys Article · ~12 min read · Starting Up How Indian D2C Brands are Getting Customers to Return to their Site Ginesys
20. Most founders call a paid campaign a winner or loser off a handful of clicks, and this piece walks through exactly why that... GuessTheTest Article · Starting Up Calculating Sample Size in A/B Testing: Everything You Need to Know Deborah O'Malley
21. This is the cleanest explanation of the one idea that decides your first channel: Google captures demand that already exists,... Big Flare Article · About a 12 minute read · Starting Up Meta Ads vs Google Ads for Ecommerce: The Demand Generation vs Demand Capture Framework Daryl Mander
22. This is written from the point of view of the person who clicked your ad and then left, which is exactly the founder standing... Unbounce Essay · About a 10 minute read · Starting Up I Wanted to Convert on Your Landing Page, But I Couldn't. Here's Why. Amy Middleton Hebdon
23. This is the cleaner half of the answer you actually asked: when a creative wears out and how often to swap it. Motion analyzes... Motion Article · 10 min read · Starting Up Ad Fatigue: What It Is and How to Avoid It Motion
24. This is the piece that names the exact trap you are in: your ad platforms each claim credit for the same sales, so the numbers... Occam's Razor Essay · About a 15 minute read · Starting Up Marketing Analytics: Attribution Is Not Incrementality Avinash Kaushik

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