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Complete Codex AI Course: From Beginner to Advanced
Highest Rated
New
Rating: 5.0 out of 5(45 ratings)
74 students

Complete Codex AI Course: From Beginner to Advanced

Master AI agents to build applications, automate tasks, fix bugs, and develop real-world projects.
Highest Rated
New
Created byMatheus Stangherlin
Last updated 7/2026
English
English [Auto],

What you'll learn

  • Understand the fundamentals of Codex AI, AI agents, OpenAI, ChatGPT, and automation applied to software development.
  • Create, configure, and navigate Codex on desktop, web, and mobile, using its plans, interface, and essential settings.
  • Learn how to communicate with AI agents using clear prompts, context, constraints, and well-defined objectives.
  • Build real-world applications with Codex using HTML, CSS, JavaScript, and Python, even without advanced experience.
  • Create landing pages, dashboards, and responsive projects with Codex and structured development workflows.
  • Fix bugs, improve performance, and enhance existing systems with Codex without breaking existing features.
  • Use integrations, plugins, Chrome, MCP Servers, Plan Mode, and Goal Mode to automate tasks and expand Codex’s capabilities.
  • Apply professional features such as AGENTS, code reviews, multiple agents, and worktrees in real-world projects.

Course content

2 sections • 13 lectures • 1h 21m total length

  • Welcome3:15
  • What Codex Is and How It Works3:45

    Explore what Codex is and how it works in the complete Codex AI course from beginner to advanced. Understand the core concepts and practical implications to build a solid foundation.

  • Differences Between ChatGPT and Codex3:36
  • How AI Agents Really Work4:37
  • Creating Your Account and Installing Codex on Your Computer3:41
  • Codex on Mobile: Installation and Use5:54
  • Accessing Codex: plans and interface12:26
  • Essential Codex Settings13:27

    Explore essential Codex settings to balance autonomy and oversight, controlling file access, commands, and permissions. Learn how environments, editors, languages, appearances, and memory tailor Codex to your workflow.

  • Codex Models: Sol, Luna, and Terra8:54

    Explore the SUL, TERA, and LUNA codex models and learn to select the right model based on task complexity, balancing depth, speed, and usage.

Requirements

  • No advanced programming experience is required. Beginners can follow the course from the very beginning.
  • A computer or laptop with internet access is recommended so you can install and use Codex in practice.
  • An interest in Artificial Intelligence, AI agents, automation, programming, or creating digital projects.
  • Basic computer navigation skills are helpful, but the course explains the entire workflow step by step.

Description

This course covers the practical use of artificial intelligence.
This comprehensive course was designed for anyone who wants to master Codex AI and learn how to use Artificial Intelligence agents to build real-world applications, automate tasks, fix problems in existing systems, and accelerate development projects without having to write everything manually.

Throughout the course, you will learn everything from the fundamentals of Codex AI, how agents really work, and how to communicate with them effectively, to the practical development of complete applications using HTML, CSS, JavaScript, and other programming languages. You will understand how to transform ideas into functional projects, delegate tasks to intelligent agents, and achieve results much faster than with traditional development methods.

In addition to creating new projects, you will also develop a highly valuable skill in today’s job market: using Codex to understand existing systems, analyze code you have never seen before, locate bugs, fix problems, improve performance, and add new features without compromising the stability of the project.

This course is suitable for beginners who want to create their first projects with AI, professionals who want to increase their productivity, entrepreneurs who want to develop digital products more quickly, and developers who want to incorporate AI agents into their workflow.

By the end of the course, you will be able to use Codex AI to build complete applications, improve existing projects, automate complex tasks, and work much more efficiently with AI-assisted software development.

Why Is This Course Different?

Most AI programming courses teach only basic commands or isolated demonstrations. In this course, you will learn how to work with AI agents in real-world scenarios, understand how to delegate tasks, build applications step by step, improve existing projects, and solve problems that arise during everyday software development.

During the training, you will create web pages, complete applications, responsive projects for mobile devices, and learn how to use Codex as a true development partner. The goal is not simply to generate code, but to learn how to transform AI into a practical tool for professionally building, maintaining, and improving software.

You will complete the course knowing not only how to use Codex AI, but also how to apply this technology to build real-world projects, solve complex problems, and significantly accelerate your software development workflow.

Who this course is for:

  • Beginners who want to learn Codex AI and use AI agents to create projects, websites, and applications.
  • Entrepreneurs and digital creators who want to turn ideas into reality with AI and accelerate development.
  • Programmers who want to use Codex to fix bugs, review code, improve performance, and increase productivity.
  • Students and self-taught learners interested in programming, automation, OpenAI, ChatGPT, and AI-assisted development.
  • Professionals who want to integrate AI agents into their workflows, GitHub, testing, maintenance, and real-world projects.

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