Every resource founders actually use, in one library.

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

1. A founder-voice conversation, not a metrics lecture, on why a pretty LTV:CAC ratio can still sink you if the cash takes years... The SaaS Podcast (SaaS Club) Podcast · Starting Up How to Calculate CAC, LTV, Retention and Churn (Startups Unplugged with Paul Orlando) Omer Khan (host), Paul Orlando (guest)
2. Video · About 35 minutes · Starting Up Building a Growth Machine (Relay Ventures CEO Summit 2018) Brian Balfour
3. 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
4. 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
5. Video · Starting Up Nine Business Models and the Metrics Investors Want Anu Hariharan
6. 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
7. Before you run anything, put your real numbers into this and see how many conversions per variant you would actually need. It... evanmiller.org Tool · Starting Up Sample Size Calculator (Evan's Awesome A/B Tools) Evan Miller
8. 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
9. 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
10. The core problem with a WhatsApp first or offline heavy product is attribution: you genuinely do not know which channel a sale... Google Analytics (GA Dev Tools) Tool · 5 minutes to build your first link · Starting Up Campaign URL Builder (Google Analytics) Google
11. A ready spreadsheet so you can plug in your own margins and spend instead of rebuilding the formulas yourself. It maps CAC,... Growth with Gary Template · Starting Up CAC LTV Ratio Heatmap Template Gary Yau Chan
12. 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
13. Video · Starting Up Facebook Ads Learning Phase Explained Hernan Vazquez
14. When one ad beats another, this free calculator tells you whether the gap is real or just luck. You plug in visitors and... VWO Tool · Starting Up A/B Test Statistical Significance Calculator VWO
15. 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
16. Video · Roughly 15 minutes · Starting Up Facebook vs Google Ads: Which is Best? Ben Heath
17. 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
18. Video · About 10 minutes · Starting Up The REAL Reason Your Facebook Ads Are Not Converting (And How To Fix It) Adam Erhart
19. 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
20. Video · ~15 min · Starting Up 5 Ad Angles To Test With Facebook Ads Nick Theriot
21. Testing several angles only works if you can actually produce several creatives, and Canva lets a solo founder do that without... Canva Tool · Free tier available · Starting Up Canva Ad Maker (free ad and social templates) Canva
22. 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
23. Video · Podcast style conversation, roughly 30 to 45 minutes · Starting Up Measuring Top of Funnel and Incrementality Testing with Zach Epstein from Haus Haus (Zach Epstein)
24. This is the clearest honest take on the exact question: does capturing the lead inside the ad beat sending someone to your... Trio Media Article · ~8 min read · Starting Up Meta Ads Strategy: Lead Forms vs Website Conversions Claire Daniels

Show the next 24