I just published 55 free courses for developers

Aug 1, 2026

My 55 new free courses cover coding, AI, the internet, Linux, deployment, databases, and security. You can also download them as PDF and EPUB files.

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I just published a large library of free courses for developers.

This is one of the biggest things I have ever published on this site.

Together, the courses contain more than 1,400 lessons and 250 quizzes.

All of it is free. You don’t need an account. You don’t need to give me your email address. You can open a course and start learning.

Seven years of material, reorganized

I made these courses using AI, of course. But I didn’t start from a blank prompt.

I used all the content I wrote over the past 7 years as the base reference material: free blog posts, books, lessons, and other material.

For a long time, that material lived in different places.

I have thousands of tutorials. They are useful when you need an answer to one specific question. I also have books that give you a wider introduction to a topic.

But learning a subject from start to finish is different.

You need a path. You need to know what comes first, what comes next, and which concepts you can leave for later.

So I used AI to reorganize everything into complete learning paths. I rewrote what needed rewriting, connected related ideas, and filled the gaps.

This was not a bulk import of old posts.

Every course is designed to read as one continuous course. The lessons build on each other, and every course tells you what you should know before starting.

How the courses work

All the courses use the same learning system.

Each course is divided into modules. Each module contains short, focused lessons, followed by quizzes and practical work.

The courses are text-first. You can learn at your own pace, copy the examples, and return to an earlier lesson when you need it again.

You can also download every course in PDF and EPUB format and keep it offline. Subscribe to my newsletter to get the complete download library, which also includes all my free books.

Your progress and quiz answers are saved in your browser. There is no account, separate dashboard, streak, or gamification system.

Just lessons, practice, and a clear path forward.

Where should you start?

If you are starting from zero, begin with HTML, CSS, and JavaScript.

If you want to build modern web applications, continue with TypeScript, React, and Next.js.

If servers and deployment feel mysterious, start with HTTP, Shell Commands, Linux Basics, and Ubuntu VPS.

If you want to understand data, start with SQL and then choose the database you use.

If you want to make your applications safer, begin with Security Fundamentals before moving into the more focused security courses.

And if you want to understand AI beyond prompts, start with AI Fundamentals and continue with the MCP courses.

Here is the complete collection.

AI courses

These courses explain how AI systems work and how developers can build with them.

Internet courses

These courses cover the protocols that quietly make the internet work.

Linux courses

Learn how to work in the terminal and understand a Linux system.

Deployment courses

Take an application from your computer to a real production platform.

Database courses

Start with relational databases and SQL, then go deeper into specific databases and Drizzle ORM.

Security courses

Learn how to protect applications, APIs, servers, dependencies, credentials, and data.

Coding and development courses

This is the largest section. It goes from the foundations of the Web to frameworks, desktop applications, browser internals, testing, and modern CSS.

They are all available now

This is not a preview or a plan. Every course listed above is published and ready.

I will keep maintaining them as tools change and new ideas appear. The course format gives all this material a structure I can improve over time.

For years, this material grew one tutorial, one book, and one lesson at a time. Now it finally has one home and a clear structure.

Seeing it all come together feels huge. I am very happy to share it with you.

See all the free courses.

Tagged: News · All topics

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