OpenAI Codex: A Practical Guide to Its Core Features

I walk through the basics of using OpenAI Codex, from its interface and settings to reusable skills and task workflows. A voice-controlled Flappy Bird-style game provides a hands-on example of planning, building, testing, and sharing a project.

- Setup and workspace: projects, chats, automations, integrations, models, and permissions
- Reusable workflows: skills, Plan mode, and Go mode, with examples of when to use each
- Project example: creating and testing a voice-controlled game, then sharing its code through GitHub
- Scope: an introduction to Codex fundamentals; production-ready development workflows are reserved for a subsequent lesson

For developers and people new to Codex, this walkthrough offers practical ways to explore its features. Start by trying a small task in Plan mode, review the proposed steps, and then use Go mode to carry out the work.