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Ask the people who’ve done it.

A free, searchable library of 1,799 of the best product-management essays, podcast episodes and posts, from Lenny Rachitsky, Marty Cagan, Teresa Torres and seven others, that answers your questions with citations.

For PMs, founders and anyone building products

Q:
Answers quote and cite the source notes
TryPMs working with AI agentsDo I have product-market fit?Pricing a B2B product

Unofficial · not affiliated with any author · every note links to the original

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Q:

How is AI changing the way we build products?

TL;DR Marty Cagan argues AI changes product work in two distinct ways: adding AI to a product, and using AI to change how the product is built2.

  • Faster code or design generation does not automatically produce better outcomes2.
  • Cagan describes prototyping at 10 to 20 per week, which was already possible before generative AI5.
  • Cagan and Bob Baxley note that faster tools only help when paired with strong judgment from product managers and designers8.
Read the full answer · 6 sources cited →
Cited sources
2 · SVPG
Marty CaganDec 29, 2024

AI Product Management 2 Years In

Read noteOriginal ↗
4 · Product Talk
Teresa TorresSep 16, 2025

Building AI Products - All Things Product Podcast with Teresa Torres & Petra Wille

Read noteOriginal ↗
7 · Lenny’s Newsletter
Lenny RachitskyApr 9, 2024

How AI will impact product management

Subscriber post — summary only Read noteOriginal ↗

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Answers come from ten product leaders’ essays, podcasts and posts, not the open web.

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Each point carries a numbered citation that links to the note and to the original essay or episode.

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14 topics, from strategy to pricing to AI, and 33 common questions already answered.

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01 — Topics · the card catalogueBrowse by topic

Postfree essay or newsletter postPaidsubscriber post, summary onlyPodcastepisode with key learningsXpost on XHover a tag for the publication

01 · Product strategy

Product strategy618

  1. 10 ideas for 2026Post
  2. Lessons from 1,000+ YC startups: Resilience, tar pit ideas, pivoting, morePodcast
  3. How Duolingo reignited user growthPost
  4. My favorite product management templatesPost
  1. Getting better at product strategyPaid
  2. PositioningPaid
  3. 5 essential questions to craft a winning strategyPodcast
  4. Vision, conviction, and hype: How to build 0 to 1 inside a companyPodcast
  1. Unpacking Innovation - All Things Product Podcast with Teresa Torres & Petra WillePost
  2. What will make personal AI go big?Paid
  3. Trash Can Tracking - All Things Product Podcast with Teresa Torres & Petra WillePost
  4. Creating Aha! Builder: Concept to Code, No Engineers RequiredPost
Open drawer ↓
02 · Discovery

Discovery539

  1. Lessons from 1,000+ YC startups: Resilience, tar pit ideas, pivoting, morePodcast
  2. How to develop product sensePost
  3. How the most successful B2B startups came up with their original ideaPost
  4. The ultimate guide to JTBDPodcast
  1. The ultimate guide to JTBDPodcast
  2. How to develop product sensePost
  3. Building product at Stripe: craft, metrics, and customer obsessionPodcast
  4. How to validate your B2B startup ideaPaid
  1. Generating Opportunity Solution Trees with AI: How Vistaly Rebuilt Its Product Around Interview Synthesis, Evals, and Repair LoopsPost
  2. Unpacking Innovation - All Things Product Podcast with Teresa Torres & Petra WillePost
  3. Trash Can Tracking - All Things Product Podcast with Teresa Torres & Petra WillePost
  4. Ch. 10: Testing AssumptionsPost
Open drawer ↓
03 · Growth

Growth215

  1. 500,000Post
  2. Growth tactics, retention strategies, and becoming a better writerPodcast
  3. How Duolingo reignited user growthPost
  4. What is good retention?Post
  1. How the biggest consumer apps got their first 1,000 usersPost
  2. How Duolingo reignited user growthPost
  3. Growth tactics, retention strategies, and becoming a better writerPodcast
  4. How to kickstart and scale a consumer business—Step 4: Find your early adopters by doing things that don’t scalePost
  1. 90 minutes of unfiltered product advice from Snap and Discord’s product chiefPodcast
  2. $5300 in $100s: The verdictPost
  3. $5300 in $100sPost
  4. Why SaaS freemium playbooks don’t work in AI, and what to do insteadPaid
Open below ↓
04 · Pricing

Pricing77

  1. Pricing your SaaS productPost
  2. How to describe your business as an equationPost
  3. The Subscription Value Loop: A framework for growing consumer subscription businessesPost
  4. He saved OpenAI, invented the “Like” button, and built Google Maps: Bret Taylor on the future of careers, coding, agents, and morePodcast
  1. Pricing your SaaS productPost
  2. Pricing your AI product: Lessons from 400+ companies and 50 unicornsPodcast
  3. The Subscription Value Loop: A framework for growing consumer subscription businessesPost
  4. Lessons from going freemium: a decision that broke our businessPaid
  1. 90 minutes of unfiltered product advice from Snap and Discord’s product chiefPodcast
  2. $5300 in $100sPost
  3. How to close $100K+ enterprise deals, step by stepPodcast
  4. Why SaaS freemium playbooks don’t work in AI, and what to do insteadPaid
Open drawer ↓
05 · Building AI products

Building AI products301

  1. OpenAI’s CPO on how AI changes must-have skills, moats, coding, startup playbooks, morePodcast
  2. Inside ChatGPT: The fastest-growing product in historyPodcast
  3. What people are vibe coding (and actually using)Paid
  4. You should be playing with GPTs at workPost
  1. OpenAI’s CPO on how AI changes must-have skills, moats, coding, startup playbooks, morePodcast
  2. How to build AI product sensePaid
  3. Inside ChatGPT: The fastest-growing product in historyPodcast
  4. Build your personal AI copilotPost
  1. What will we use our minds for?Paid
  2. Generating Opportunity Solution Trees with AI: How Vistaly Rebuilt Its Product Around Interview Synthesis, Evals, and Repair LoopsPost
  3. The grief, loneliness, and burnout sweeping through the tech industry right nowPodcast
  4. Experts Lead ExpertsPost
Open drawer ↓
06 · Leadership

Leadership563

  1. Jenny WenPodcast
  2. The paths to power: How to grow your influence and advance your careerPodcast
  3. Building a long and meaningful careerPodcast
  4. Become a better communicator: Specific frameworks to improve your clarity, influence, and impactPodcast
  1. From ChatGPT to Instagram to Uber: The quiet architect behind the world’s most popular productsPodcast
  2. How to debug a team that isn’t working: the Waterline ModelPaid
  3. Lessons from scaling StripePodcast
  4. $46B of hard truths from Ben Horowitz: Why founders fail and why you need to run toward fear (a16z co-founder)Podcast
  1. Recorded Conversations - All Things Product Podcast with Teresa Torres & Petra WillePost
  2. TBM 443: The Standard SetterPost
  3. New Resource: 23 Videos Answering Your Career QuestionsPost
  4. TBM 442: 10 Career Traps (Thoughtful People Fall Into)Post
Open drawer ↓
07 · PM career

PM career472

  1. How to Spot a World-Class DesignerPodcast
  2. 10 ideas for 2026Post
  3. 500,000Post
  4. Time management techniques that actually workPost
  1. How to get into product managementPost
  2. Building a long and meaningful careerPodcast
  3. Why Product Sense is the only product skill that will matter in the AI agePost
  4. What it takes to become a top 1% PMPodcast
  1. What will we use our minds for?Paid
  2. TBM 443: The Standard SetterPost
  3. New Resource: 23 Videos Answering Your Career QuestionsPost
  4. TBM 442: 10 Career Traps (Thoughtful People Fall Into)Post
Open drawer ↓
08 · Go-to-market

Go-to-market149

  1. My favorite product management templatesPost
  2. PositioningPaid
  3. How the biggest consumer apps got their first 1,000 usersPost
  4. What world-class GTM looks like in 2026Podcast
  1. What world-class GTM looks like in 2026Podcast
  2. An inside look at Figma’s unique GTM motionPodcast
  3. "Sell the alpha, not the feature": The enterprise sales playbook for $1M to $10M ARRPodcast
  4. Founder-led salesPodcast
  1. $5300 in $100s: The verdictPost
  2. $5300 in $100sPost
  3. How to close $100K+ enterprise deals, step by stepPodcast
  4. From COVID Pivot to AI World Building: How Snapbar Reinvented the Photo ExperiencePost
Open drawer ↓
09 · Startups

Startups291

  1. Lessons from 1,000+ YC startups: Resilience, tar pit ideas, pivoting, morePodcast
  2. Inside ChatGPT: The fastest-growing product in historyPodcast
  3. How the biggest consumer apps got their first 1,000 usersPost
  4. How to kickstart and scale a consumer businessPost
  1. Lessons from 1,000+ YC startups: Resilience, tar pit ideas, pivoting, morePodcast
  2. How to kickstart and scale a consumer businessPost
  3. How the most successful B2B startups came up with their original ideaPost
  4. Lessons from a two-time unicorn builder, 50-time startup advisor, and 20-time company board memberPodcast
  1. Why companies are becoming a series of loopsPodcast
  2. Building AI for Women's Health: How Hertility Combined Bayesian Diagnosis and Scan AutomationPost
  3. From COVID Pivot to AI World Building: How Snapbar Reinvented the Photo ExperiencePost
  4. Great Products, Bad CompaniesPost
Open drawer ↓
10 · Product design

Product design131

  1. How to Spot a World-Class DesignerPodcast
  2. How to develop product sensePost
  3. Jenny WenPodcast
  4. When AI Has Better Taste Than YouPost
  1. How to Spot a World-Class DesignerPodcast
  2. Jenny WenPodcast
  3. 35 years of product design wisdom from Apple, Disney, Pinterest, and beyondPodcast
  4. Building beautiful products with Stripe’s Head of DesignPodcast
  1. Unpacking Innovation - All Things Product Podcast with Teresa Torres & Petra WillePost
  2. What will make personal AI go big?Paid
  3. AI for No Good ReasonPaid
  4. How to Stop Complaining About Your SoftwarePaid
Open drawer ↓
11 · Metrics

Metrics318

  1. How Duolingo reignited user growthPost
  2. The ultimate guide to A/B testingPodcast
  3. What is good retention?Post
  4. The ultimate guide to AEO: How to get ChatGPT to recommend your productPodcast
  1. The ultimate guide to A/B testingPodcast
  2. How to describe your business as an equationPost
  3. How to measure cohort retentionPost
  4. How Duolingo reignited user growthPost
  1. Generating Opportunity Solution Trees with AI: How Vistaly Rebuilt Its Product Around Interview Synthesis, Evals, and Repair LoopsPost
  2. Ch. 10: Testing AssumptionsPost
  3. 4 New Evals and 16 Experiment Variants to Fix 1 Customer ComplaintPost
  4. Get My Eval Test Harness and Run Your First ExperimentPost
Open drawer ↓
3 more drawersBrowse all 14 topics →
Open drawer · 03

Growth & retention

215 notes · 73 people · 2005–2026
popularrelevantnewest
Lenny’s Newsletter · Free post♥ 1,607

500,000

Sep 11, 2023 · 11 min

“This week the newsletter hit 500,000 subscribers, which I’m told makes it among the top five largest newsletters on Substack and one of the largest newsletters broadly. Friggin’ bonkers. A big round number is a good time to reflect, so I’ve collected some lessons from my journey. I still only sort of know what I’m doing, and it’s unclear where this all goes, but if you’re thinking about embarking on a writing journey, or are just…”

Read at lennysnewsletter.com ↗
Lenny’s Newsletter · Free post♥ 1,022

How Duolingo reignited user growth

Feb 28, 2023 · 21 min

Jorge Mazal, former CPO of Duolingo, recounts how the company reversed a slide in daily active user growth and eventually grew DAU about 4.5x over four years. The journey began with failed attempts: a…

Read at lennysnewsletter.com ↗
@shreyas · Shreyas Doshi on X♥ 204
This happens to smart people because of: 1. Deep-rooted identity of “I am good at product” (vs. “I am good at winning” or something like that) 2. Moral aversion against marketing & distribution 3. A habit of seeking virtue points by proclaiming “I just want to serve my users”
Oct 5, 2026View on X ↗Note →
Lenny’s Newsletter · Free post♥ 225

What is good retention?

Jun 9, 2020 · 12 min

Lenny Rachitsky and Casey Winters surveyed 20 experienced growth practitioners to define what good and great retention looks like across business types. They asked for benchmarks on user retention at six months and net…

Read at lennysnewsletter.com ↗
Lenny’s Podcast79 min

Growth tactics, retention strategies, and becoming a better writer

Julian Shapiro · Sep 25, 2022
Key learnings
  • Pursue product-led acquisition by designing features where users naturally invite others, such as settling debts, sharing…
  • Build user state, like reputation, audience, or social graphs that cannot transfer off-platform, so accumulated investment makes…
  • Prefer evergreen topics and keep updating old writing, since Julian treats his handbooks and posts as living assets rather than…
Watch ↗
@lissijean · Melissa Perri on X♥ 8
Most teams make the mistake of waiting for data to magically appear before building their AI product. They get stuck in the classic chicken-and-egg problem: you need data to build good AI, but you need users to generate that data. So they wait. And wait. And wait some more. /1
Nov 5, 2025View on X ↗Note →

02 — FrameworksModels, annotated.

All frameworks →
Fig. 01 · Opportunity Solution Tree · 130 notes

Opportunity Solution Tree

Mission → Vision → Strategy → Goals → Roadmap → Task
Lenny RachitskyLenny’s Newsletter · Oct 2022 · subscriber
How to get into product management
Lenny RachitskyLenny’s Newsletter · Jun 2019
How Figma builds product
Lenny RachitskyLenny’s Newsletter · Nov 2022 · subscriber
The one question that saves product careers
Matt LeMayLenny’s Podcast · Aug 2025

Most often discussed by Claire Vo. See all 130 notes →

Continuous DiscoveryTeresa Torres97 notesJobs To Be DoneBob Moesta54 notesProduct TrioChristina Wodtke42 notesProduct DiscoveryMarty Cagan32 notesMinimum Viable ProductEric Ries28 notesProduct Operating ModelMelissa Perri26 notesAssumption TestingTeresa Torres25 notesOKRsClaire Hughes Johnson25 notesStory MappingTeresa Torres23 notes

03 — PeopleWho wrote the notes.

All 10 people →
LR

Lenny Rachitsky

Newsletter · Podcast · X · @lennysan

Writer of Lenny's Newsletter and host of Lenny's Podcast.

334 essays318 episodes8 posts
TT

Teresa Torres

Product Talk · X · @ttorres

Product discovery coach, author of Continuous Discovery Habits; writes Product Talk.

474 essays24 posts1 guest spot
MC

Marty Cagan

SVPG

Founder of Silicon Valley Product Group (SVPG) and author of Inspired, Empowered and Transformed.

478 essays1 guest spot
HS

Hiten Shah

Medium · X · @hnshah

Co-founder of Crazy Egg, KISSmetrics and FYI; writes about product, SaaS and customer research.

20 essays13 posts
SD

Shreyas Doshi

Substack · X · @shreyas

Product leader (Stripe, Twitter, Google, Yahoo) and advisor known for frameworks on product sense and…

19 essays2 episodes9 posts2 guest spots
JF

Jason Fried

HEY World · @jasonfried

Co-founder and CEO of 37signals (Basecamp, HEY), co-author of Rework and Shape Up's home company.

28 essays1 guest spot
MP

Melissa Perri

Blog · X · @lissijean

Author of Escaping the Build Trap, founder of Produx Labs and Product Institute.

20 essays7 posts1 guest spot
JZ

Julie Zhuo

The Looking Glass · X · @joulee

Former VP of Product Design at Facebook, author of The Making of a Manager; writes The Looking Glass.

16 essays3 episodes4 posts1 guest spot

04 — QuestionsAnswered from the notes.

All 33 questions →
Q:

How do I build product sense?

Product sense is a learnable skill, not a fixed gift, and the sources agree on building it through deliberate immersion in customers and products. Jules Walter argues it…

Read the answer →Q:

How do I write a product strategy?

The sources agree that a product strategy is your plan for making the product vision real, not a feature list or a spec. Start by deciding what matters most and being…

Read the answer →Q:

What is an empowered product team?

An empowered product team is a cross-functional team given problems to solve rather than features to build, and held accountable for outcomes. Marty Cagan defines it by…

Read the answer →Q:

When should a startup raise prices?

A startup should raise its prices earlier and more often than most teams do, because founders tend to underprice and rarely revisit price. Patrick Campbell puts it…

Read the answer →Q:

What makes a great product manager?

Great product managers, per these sources, are judged by business outcomes and value/viability ownership rather than feature output or backlog administration. Marty…

Read the answer →Q:

How do I choose a north star metric?

The sources agree that the North Star Metric is tied to strategy rather than being just a dashboard number. Lenny Rachitsky frames it as your strategy, and his guide…

Read the answer →

Where notes come from

NewsletterLenny’s Newsletter110 free posts, with a longer excerpt.
Subscriber postsSummary only233 paid posts: our summary, at most two short quotes, and a link.
PodcastLenny’s Podcast323 episodes, each with 5–8 key learnings and timestamps.
EssaysSVPG · The Beautiful Mess499 essays from Marty Cagan and John Cutler.
Substack & blogsShreyas · Julie · Jason · Hiten577 essays and posts from independent writers.
XPosts on product66 posts, filtered for product relevance.