Terms and conditions
Last updated 4 September 2026. These terms cover campoandres.com and Product Thinking, published by Andrés Campo. They are written to be read, not to be scrolled past.
The book is free
Product Foundation is open to everyone. The other whitepapers, plus bookmarks and highlights, open after a free sign-up with your name, your email and a word about who you are. No password, no card, no catch.
The newsletter
When you sign up you are added to the Product Thinking newsletter on Substack. It goes out when there is a new whitepaper, a major revision, or a new essay, and not otherwise. Every email has an unsubscribe link, and unsubscribing takes one click.
What we do with your data
We keep your name, email, the role you chose, and when you signed up and last visited. We look at what people read, where they stop, and what they highlight, in aggregate, to understand which parts of the book work and to make it better. We do not sell, rent or share your data with anyone, and we do not send marketing for other products.
Your reading progress, bookmarks and highlights live in your own browser. Clearing your browser data removes them.
Deleting your account
Write to hi@campoandres.com and we will delete your record. That is the whole process.
Using the book
The text is © Andrés Campo. Quote it freely with attribution and a link. Please do not republish whole chapters without asking. Cases in the book come from real engagements and are anonymized.
What the book is not
It is opinion and experience, offered as is. It is not legal, financial or professional advice, and the decisions you make from it are your own.
Changes
If these terms change in a way that matters to you, we will say so here and, if it touches your data, by email.