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

You’ll download the course files, open them as a project in the Codex app, and start your first lesson. The lessons are packaged as Codex skills that the app discovers automatically when you open the course folder.

Key takeaway: Download the files → add the folder as a project in Codex → type /start 1 1.

Step 1: Download the Course Files

The ZIP lands in your Downloads folder. Double-click it to unzip — you’ll get a folder called complete-course. Move it somewhere easy to find, like your Documents folder.

Step 2: Open the Folder in Codex

In the Codex app:

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

3. Click Add new project.
4. Click Use an existing folder, and select your complete-course folder.

The course is now a project in Codex, and your chat is connected to it.

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).

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 you added the unzipped complete-course folder (not the ZIP file itself). Click Work in a project → Add new project → Use an existing folder and pick the unzipped folder.
• The lessons live in a hidden .agents folder inside the course — it may not be visible in Finder/Explorer, but Codex finds it automatically.

I picked the wrong folder

• No problem — click Work in a project → Add new project → Use an existing folder again and select the right one.

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 →