Free · one email a week · no jargon

AI, business and money, explained from A to Z.

One short lesson a day, from the ground up. Every Sunday, One Floor Up: the 5 lessons that mattered this week, in 5 minutes, with one workflow you can copy.

Get the Second Brain Guide free, then One Floor Up every Sunday. Unsubscribe in one click.

You're in. Check your inbox: the Second Brain Guide is on its way. See you upstairs on Sunday.

How it works

Downstairs, the noise. Upstairs, the lesson.

  1. A lesson a day

    Every day, one subject explained from A to Z in about 2 minutes: a video, or a carousel you can read without sound. On TikTok, Instagram, YouTube and LinkedIn.

  2. One Floor Up, every Sunday

    The 5 lessons that mattered this week, in a 5-minute email. Plus one workflow you can copy as is, and the sources behind every number.

  3. No hot takes, no homework

    No jargon, no affiliate links dressed up as advice, no 47-step morning routine. When something is a rumor, we say rumor. When we don't know, we say so.

Five tracks

The questions you actually type into Google, answered properly.

AI
  • What is an AI agent?
  • Which tools are worth paying for
  • How to use AI at work without looking lazy
Business
  • Finding your first customers
  • Selling before you build
  • Pricing what you sell
Money
  • How interest rates work
  • What compounding really does
  • Reading a bank's offer
Economy
  • How a recession works
  • Why prices rise
  • What a central bank actually does
SaaS
  • Building one alone
  • What to charge, and when
  • Why most never ship

Who's upstairs

Built in public, by one person.

Four years building online, solo. Three SaaS. An AI character that went from 0 to 218,000 TikTok followers in 9 days. Upstairs is what that work taught, written so anyone can use it: an employee, a boss, a freelancer, a student.

The numbers behind it are posted every day on X, screenshots included: @luisships. We just started. You're early.

4 yearsbuilding online, solo
3 SaaSshipped, one in progress
0 → 218Kfollowers in 9 days, with an AI character

The free guide

Give your AI a memory.

Most people re-explain their work to AI every single time. This guide sets up the opposite: one folder your AI reads, writes and keeps tidy, so every question builds on the last one.

  • The folder structure: raw sources, a wiki your AI writes, an index, a log it can't erase.
  • The rules file your AI reads before every session. Copy, paste, adjust.
  • 3 routines: add a source, ask a question, run a monthly check-up.
  • Obsidian is free. No code. About an hour to set up.

Free. Then one email a week, on Sunday. No spam, ever. Unsubscribe in one click.

You're in. Check your inbox: the Second Brain Guide is on its way. See you upstairs on Sunday.

Cover of the Second Brain Guide

Questions

Short answers.

Is it really free?

Yes. The guide, the daily lessons and One Floor Up are free. If we ever build something paid, it will be a separate thing, said out loud, and One Floor Up will stay free.

Do I need to know how to code?

No. You install Obsidian (free), copy a folder and a rules file, and talk to your AI in plain English. The guide walks you through every step.

Which AI does it work with?

Any AI assistant that can read and write files on your computer. The guide uses Claude Code: the second brain behind Upstairs has run on it since July 2026.

How much email is that?

One, on Sunday. The daily lessons live on TikTok, Instagram, YouTube and LinkedIn, not in your inbox.

Who is this for?

Anyone who works with, or around, AI and money: an employee, a boss, a freelancer, a student. No technical background needed. Everything starts from zero.

Is this financial advice?

No. Upstairs explains how things work. It never tells you what to buy or sell, and it never will.

Where do the numbers come from?

Every figure in a lesson is checked against an official source or two independent ones before it goes out. The sources are listed in One Floor Up, every Sunday.