Module 0: Getting Started0.3: Opening the Course

Module 0.3: Opening the Course in Codex

Reference Guide

  • Time to Complete: 5 minutes
  • Prerequisites: Codex app installed and signed in (Module 0.2)

📖 Overview

This course uses the Codex app. You’ll start a new project, paste one setup prompt, and Codex sets up the whole course for you. The lessons are packaged as Codex skills that get installed right into your project.

Key takeaway: Start a project in Codex → paste the setup prompt → type /start 1 1.

Step 1: Start a New Project

In the Codex app:

  1. Start a new chat.
  2. Click Work in a project, just below the message box.

The new chat screen with Work in a project below the message box

  1. Click Add new project and create a new, empty project for the course. Name it whatever you like (codex-course works fine).

Your chat is now connected to the project.

Step 2: Paste the Setup Prompt

Copy this into the message box and hit Enter:

Fetch fullstackpm.com/cli and help me start Codex for Product Managers

Codex installs the FSPM CLI, checks in with the course system, and takes it from there — it welcomes you, gives you a quick tour, and installs the course right into your project. No downloads to unzip, no folders to hunt for.

Step 3: Start Your First Lesson

In the message box, type / — a menu of commands appears, including the course lessons. Pick Start 1 1 (or just keep typing /start 1 1) and hit Enter.

Codex loads the lesson and becomes your instructor from there. Just follow along — it will introduce TaskFlow, explain how the course works, and tell you exactly what to do next.

Each lesson ends by telling you the command for the next one (/start 1 2, /start 1 3, and so on).

Prefer the Terminal? The CLI Path

If you use Codex CLI instead of the app, the same course works there:

  1. Install the FSPM CLI — npm i -g fullstackpm, or follow the instructions at fullstackpm.com/cli.
  2. In a new, empty folder, run fspm get codex-for-pms.
  3. Launch Codex CLI in that folder and type /start 1 1.

Everything else in these reference pages applies to both paths.

About AGENTS.md

Codex can keep “project memory” in a file called AGENTS.md — it tells Codex about your project so it behaves consistently across sessions. You’ll create and use your own AGENTS.md in Module 1.6: Project Memory.

🐛 Troubleshooting

The lessons don’t show up when I type /

  • Make sure the setup prompt finished. Codex confirms when the course is installed.
  • Start a fresh conversation in the same project and try / again.
  • The lessons live in a hidden .agents folder inside your project — it may not be visible in Finder/Explorer, but Codex finds it automatically.

I set up the course in the wrong project

  • No problem — start a new chat, click Work in a project, create the project you want, and paste the setup prompt again.

The lesson starts in the wrong language or acts strangely

  • Start a fresh conversation in the project and type /start 1 1 again.

🚀 What’s Next?

Module 0.3 complete — the course is open in Codex and you’ve started Lesson 1.1.

Next: Module 1.1 — Welcome to TaskFlow, where you’ll meet your fictional company and get your bearings.

Go to Module 1.1 →

0.2: Get the Codex App1.1: Welcome to TaskFlow