Why we picked it Alstromer ran growth at Airbnb and now works with hundreds of YC startups, and his core message answers the question directly: working on growth, including paid ads, before you have product-market fit and real retention is a mistake. He is specific about the metrics that actually signal you are ready, versus the vanity numbers that lie. It reframes paid spend as an amplifier for something already working, not a way to create demand.
How to Get Users and Grow
On Y Combinator (Startup School) by Gustaf Alstromer About 30 minutes
- Do not spend on growth or paid channels before you have product-market fit and good retention, ads amplify what exists, they cannot manufacture it.
- Retention is the truest signal of whether people want your product, watch it before you open a marketing budget.
- Founders should get first users through direct effort and sales, paid acquisition comes later once the funnel actually converts and retains.