Working notes from product people

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

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

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

Every claim is cited

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

No outside knowledge

Ask writes only from the library, and says plainly when the library doesn’t cover your question.

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01 · Ask a questionGet a cited answer in seconds.

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02 · Learn a topicRead what the best people say.

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

3 more drawersBrowse all 14 topics →
Open drawer · 08

Go-to-market & sales

149 notes · 50 people · 2005–2026
Lenny’s Newsletter · Free post♥ 614

My favorite product management templates

Aug 4, 2020 · 5 min

“Hello and welcome to thefree monthly editionof my weekly newsletter. I’m Lenny, and each week I humbly tackle reader questions about product, growth, working with humans, and anything else that’s stressing you out at the office. Q: I’ve seen you share a few PM templates in the past. Do you have a place to find all of your favorite templates? Now I do! Below are all of my favorite templates and frameworks that I rely on. As a bonus, I…”

Lenny’s Newsletter♥ 199

Positioning

Jan 26, 2021 · 18 min
Subscriber post — summary only

April Dunford gives a practical guide to product positioning, using a story about a mispositioned database product to show how context shapes customer assumptions. She argues positioning should be built by starting from…

@hnshah · Hiten Shah on X♥ 35
To the founder who can suddenly build almost anything Product marketing is about to matter a lot more. Software has become dramatically cheaper to make. A small team can ship in weeks what used to take a much larger team months. AI can help with research, design, code, support,
Lenny’s Podcast100 min

What world-class GTM looks like in 2026

Jeanne Grosser · Nov 30, 2025
Key learnings
  • Treat go-to-market as an integrated lifecycle spanning marketing, sales, customer success, and support, mapping the jobs to be…
  • Expect the buyer experience of being sold to to become a differentiator, so design the sales journey as a distinctive, valuable…
  • Frame value around avoiding pain and reducing risk, since many buyers purchase to avoid downside rather than chase upside…
Lenny’s Newsletter · Free post♥ 314

The Best of Lenny’s Newsletter 2022

Dec 27, 2022 · 7 min

Lenny Rachitsky's year-end roundup revisits his 250-plus past newsletter posts and podcast episodes, selecting the most popular ones and sorting them into problem-based categories such as building product, go-to-market…

@hnshah · Hiten Shah on X♥ 24
AI makes bad product marketing look finished. That’s the part I don’t trust. A competitive brief can sound current while leaning on an old source. Positioning can sound sharp even when the logic underneath is a guess. A battlecard can look complete and still fail the rep who

02 — FrameworksModels, annotated.

All frameworks →

03 — PeopleWho wrote the notes.

All 10 people →

04 — QuestionsAnswered from the notes.

All 33 questions →

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.