# Codex: Basic Onboarding, Setup, and First Tasks

> There are three ways to work with AI when writing code - and Codex covers the most ambitious of them.

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> **[Restricted Content]**
> The full version is available to AI-Base / Plus subscribers or via one-time purchase.
> Open the full guide on the website: https://gotburnout.io/en/guides/ai_base/codex-onboarding-first-tasks