Lenny's Newsletter · Starting Up

📄 Article

Freemium Intermediate

How to identify your ideal customer profile (ICP)

From Lenny's Newsletter by Lenny Rachitsky ~15 min read

Why we picked it

Market size is meaningless until you know exactly who you're for, and Lenny turns that into a concrete, repeatable ICP exercise from real B2B operators. It grounds your SAM in an actual customer definition instead of a fuzzy segment.

Define the specific customer you serve before you size the market, not after.
A sharp ICP makes your bottom-up market math credible and your GTM focused.
Narrowing 'who it's for' is what makes a small beachhead winnable.

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Answers How big does my market need to be for this to be a real business? What are TAM, SAM, and SOM and how do I actually calculate them? How do I size a market for India specifically when data is messy?

📄 Article

Freemium Intermediate

How to Validate Your B2B Startup Idea

From Lenny's Newsletter by Lenny Rachitsky ~20 min read

Why we picked it

Synthesizes 25+ B2B founder interviews into concrete pre-build validation paths, so you don't build an MVP before you need one. The intro (the four validation paths) is free and directly on-topic.

Four paths: manual, listening, prototype, and launch-first.
Default to ~30 customer interviews before building.
Look for pain plus pull, money paid, usage, strong emotion, cold inbound.

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Answers Should I build an MVP at all, or can I validate without one?

📄 Article

Freemium Intermediate

Prioritizing

From Lenny's Newsletter by Lenny Rachitsky ~15 min read

Why we picked it

The canonical PM-community reference on choosing what to build next, from the most-read product newsletter. A pragmatic overview of scoring frameworks and how to actually use them.

Prioritize around outcomes, not output.
Use scoring frameworks (RICE/DRICE) to compare ideas objectively.
Deeper investigation kills 'promising' bets and elevates quiet high-ROI winners.

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Answers How do I decide what to build next?

📄 Article

Freemium Intermediate

How today's fastest-growing B2B startups found their first ten customers

From Lenny's Newsletter by Lenny Rachitsky ~15 min read

Why we picked it

A data-backed teardown of how companies like Figma, Gusto, and Vanta actually sourced their earliest customers. Replaces guesswork with real patterns.

Only three sourcing strategies power nearly all very-early B2B growth.
Tap your personal network first (Gusto's first 10 were friends/YC batchmates).
Reach influential users via direct outreach (Figma cold-emailed top designers).
Start with the highest-trust channels and work outward.

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Answers Where do I find the very first people to even talk to about my product? How did real successful startups actually land their first customers? Is cold outreach even worth it, or is it just spam that hurts my brand? How do I build a targeted list of the right people to cold email? How do the fastest-growing B2B companies find and scale their distribution?

📄 Article

Freemium Intermediate

How to win your first 10 B2B customers

From Lenny's Newsletter by Lenny Rachitsky ~15 min read

Why we picked it

A tactical follow-on covering the channels and motions top B2B startups scale after the first ten. Grounds distribution strategy in real company examples.

Content/SEO is a surprisingly dominant B2B channel (Vanta, Amplitude, Figma, HubSpot).
The core B2B channels: self-serve inbound, sales-assist inbound, outbound, content, paid, partnerships.
Pick and systematize the one channel that compounds for you.
Distribution strategy should follow evidence, not fashion.

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Answers What's the best channel to launch on, Product Hunt, Reddit, Hacker News, or LinkedIn? Why does everyone say 'distribution is more important than product'? Should I focus on one channel or spread across many? How do the fastest-growing B2B companies find and scale their distribution? How do I land my first enterprise customer when nobody has heard of us? Should I use design partners, and how do I structure the deal? Can an Indian startup sell to global enterprises, and what's different about doing it from India?

📄 Article

Freemium Intermediate

How to win your first 10 customers via direct outreach

From Lenny's Newsletter by Lenny Rachitsky ~15 min read

Why we picked it

Shows exactly how top startups turned early cold/warm outreach into paying customers, with real message-level detail. Grounds cold outreach advice in what actually worked.

Build a tight, targeted list of ideal-fit prospects instead of blasting.
Warm the intro where possible; personalize every message.
Direct outreach to influential users is a proven early channel.
Convert early users into paying customers deliberately, not passively.

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Answers How do I write a cold email that people actually reply to? How many times should I follow up before giving up on a cold prospect? Cold email or cold LinkedIn/DM, what works better for reaching first customers? How do I build a targeted list of the right people to cold email?

📄 Article

Freemium Intermediate

The North Star Playbook & Choosing Your Growth Metrics

From Lenny's Newsletter by Lenny Rachitsky ~20 min read

Why we picked it

Lenny distills how the best product teams pick a single North Star that captures real customer value and drives the whole growth model, with concrete company examples.

A good North Star metric measures delivered customer value, not vanity signups.
Break the North Star into a small set of input metrics you can actually move.
Fewer, well-chosen metrics reviewed weekly beat sprawling dashboards nobody reads.

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Answers What growth metrics should I actually track as an early-stage startup? How do I know if I have product-market fit before I try to grow? How should I set up a simple growth model or dashboard? How do I know if my paid ads are actually profitable? How do I measure and analyze retention properly?

📄 Article

Freemium Intermediate

The Growth Engine: Kickstarting & Scaling a Consumer Business (Step 6)

From Lenny's Newsletter by Lenny Rachitsky ~20 min read

Why we picked it

Based on studying 100+ consumer companies, Lenny shows that lasting growth comes from becoming world-class at one growth engine, viral, SEO, or paid, rather than dabbling in all three.

Most successful startups run on a single dominant growth engine.
The three engines are viral/word-of-mouth, content/SEO, and paid.
Pick one and become world-class before layering on a second.

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Answers What is a growth loop and why is it better than a funnel? What are the 'four fits' I need before growth compounds? How should I set up a simple growth model or dashboard? Why did my marketing channel stop working after a few months?

📄 Article

Freemium Intermediate

A Founder's Guide to Community

From Lenny's Newsletter by David Spinks ~25 min read

Why we picked it

From the founder of CMX and author of The Business of Belonging, a practical framework for deciding whether to build community and tying it to real business goals.

To build community you help people help each other, not build an audience.
Use the SPACES model to map community goals to business outcomes.
Start with founding members and events before scaling to a big open space.

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Answers What is community-led growth and is it right for my startup? How do I start a community from zero? How do I keep a community engaged instead of dead? How do I tie community to real business outcomes? What does a thriving Indian startup community actually look like in practice?

📄 Article

Freemium Intermediate

How the Best Companies Measure and Improve Retention

From Lenny's Newsletter by Lenny Rachitsky ~20 min read

Why we picked it

Concrete retention benchmarks and cohort-analysis methods gathered from dozens of top companies, so you can tell a healthy retention curve from a dying one.

Judge retention with cohort curves; a flattening plateau signals real value.
A curve decaying to zero means you don't yet have product-market fit.
Benchmark retention against your category, not against vanity averages.

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Answers Why is retention more important than acquisition? How do I actually improve retention and make my product habit-forming? When should I build a referral program? How do I measure and analyze retention properly?

📄 Article

Freemium Intermediate

Building a Referrals Program

From Lenny's Newsletter by Lenny Rachitsky ~20 min read

Why we picked it

Battle-tested referral advice from the person who turned Airbnb's host referral program into its biggest driver of supply growth, honest about when referrals do and don't work.

Referral programs add fuel to existing word-of-mouth; they can't create it.
Motivating the referrer is ~90% of the problem to solve.
Expect under 10% of users to convert a successful referral.

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Answers When should I build a referral program? Is my product going to go viral, and how do I make it more shareable? What's a common mistake founders make with referral and virality?

📄 Article

Freemium Intermediate

Virality Is a Myth (Mostly)

From Lenny's Newsletter by Lenny Rachitsky ~12 min read

Why we picked it

A myth-busting piece showing most 'viral' growth is actually broadcast reach, so you can stop praying for virality and engineer word-of-mouth instead.

True peer-to-peer virality is rare; most spread is one big broadcast.
Roughly 95% of shares come from the source or one degree of separation.
Invest in in-product sharing and intentional broadcast channels (PR, creators).

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Answers Is my product going to go viral, and how do I make it more shareable? What's a common mistake founders make with referral and virality?

📄 Article

Freemium Intermediate

A Playbook for Fundraising (and building your pitch)

From Lenny's Newsletter by Lenny Rachitsky 25 min read

Why we picked it

A modern, tactical fundraising and pitch playbook aggregating advice from top operators and investors. Strong on how to build the narrative and materials that actually move investors today.

Spend real time (weeks) building the deck and narrative; the story is the product you're selling
Make the pitch conversational and use slides as backup, not a script
Nail the 'why now' and the narrative before obsessing over design

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Answers What slides should my pitch deck have, and in what order? How do I tell a compelling story instead of just listing features? What actually happens inside a VC partner meeting when I pitch? How long should my deck be, and what goes in the appendix?