Product Market Fit

Product Market Fit

Home
AI Agent Templates
Investor Database & Tools
The Deck Library
Startup Playbooks
📣 Sponsorships
Perks
About
Garry Tan: The AI Startup Playbook
Garry Tan on YC, First Principles Thinking, and How to Reorganize Your Startup Around Agents in the Age of AI
 • Guillermo Flor
The Mindset That Built NVIDIA: Jensen Huang's Founder Operating System
 • Guillermo Flor
How to build a real business installing offline AI agents for small businesses
 • Guillermo Flor
What Sam Altman says you should build now
 • Guillermo Flor
How Glean Grew From $100M to $300M ARR in 15 Months
The $60K-to-$5M Land-and-Expand Loop and the "Cut Your AI Bill" Pitch That Beat Microsoft
 • Guillermo Flor
YC Open-Sourced Its Internal AI Agent System: The Complete Guide
The Complete Guide to Getting QM Live From Setup to The Prompts to Run On Day One
 • Guillermo Flor
How Patrick Collison Decided to Start Stripe Over Sushi in 2009 and What Its Data Says About Starting Now
 • Guillermo Flor

July 2026

The Founder Podcast Playbook
How to Turn One Recording Into a Growth Engine
 • Guillermo Flor
How Alexandr Wang Built a $29 Billion AI Giant (+ Pitch Deck)
The First-Principles Test That Built a $29 Billion Company, the Conviction Playboo and the Agentic Loop That Beats 100 Engineers
 • Guillermo Flor
1X Pitch Deck: The Humanoid Backed by OpenAI
How 1X is Building the First Remote Physical Labor Infrastructure and Why This Might be One of the Strongest Robotics Decks Ever Made
 • Guillermo Flor
Claude for Finance: The Opus 5 Skill Stack
The Skills that Turn Opus 5 Into the Finance Team a Founder Never Hired
 • Guillermo Flor
Y Combinator AI Startup School 2026
30,000 applied. 6,000 got in. Here’s everything they heard.
 • Guillermo Flor
© 2026 Guillermo Flor · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture