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Product Market Fit

Daily high-signal content on how to build, grow and fund startups in the AI era

Newsletter · By Guillermo Flor · English · Paid tier available · Official site

Indexed issues, last 90 days
27
Latest publication
Sep 30, 2026
Audience
Checking…
Earliest in this view
Aug 30, 2026

Latest issues

  1. Issue · Sep 30, 2026

    What Uber, Legora, n8n, Helsing and Steven Bartlett Told 7,500 Founders in Munich (opens the original)

    Excerpt · Positive tone

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    <img alt="" class="sizing-normal" height="819" src="https://substackcdn.com/image/fetch/$s_!ePEH!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fad4de5e0-90e5-4019-996c-c645e4941c53_3840x2160.pn

  2. Issue · Sep 29, 2026

    7 Principles Behind Most Successful Founders (opens the original)

    Excerpt

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    <img alt="" class="sizing-normal" height="819" src="https://substackcdn.com/image/fetch/$s_!A9yN!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fefc5f1a5-cd01-4f74-b6f0-72d5926572bc_1672x941.png"

  3. Issue · Sep 28, 2026

    RonanRx (YC S26) Pitch Deck + How It Got to $541K in 8 Weeks (opens the original)

    Excerpt

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    <img alt="" class="sizing-normal" height="814" src="https://substackcdn.com/image/fetch/$s_!EkWI!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F362d9f16-438c-4c8e-a336-ecd81a9449ed_2048x1145.pn

  4. Issue · Sep 25, 2026

    Paul Graham’s Billion-Dollar Formula (opens the original)

    Excerpt

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    <img alt="" class="sizing-normal" height="819" src="https://substackcdn.com/image/fetch/$s_!iyUo!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F2af35c72-257e-4654-809f-d36ae97391de_1672x941.png"

  5. Issue · Sep 24, 2026

    Jev: The Complete Founder’s Guide (opens the original)

    Excerpt · Neutral tone

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    <img alt="" class="sizing-normal" height="819" src="https://substackcdn.com/image/fetch/$s_!qlPN!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6e6e5146-b60e-40db-a315-02264358e8be_1672x941.png"

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