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Meet Ruby — The book that grows with the language.

For over 20 years, this book has been the definitive Ruby reference for thousands of Brazilian developers. Written, maintained and updated since the early days of Ruby in Brazil — when almost nothing existed in Portuguese — it became the foundation for a generation of Ruby developers in the country.

Now, for the first time, it's available in English.

This isn't a snapshot. It's a living book.

Most technical books are written once and slowly become obsolete. Meet Ruby works differently. Every major Ruby release brings a new updated edition — and everyone who bought it receives the new version automatically, at no extra cost. No subscriptions. No upgrade fees. No hunting for the latest version. Buy once, stay current forever.

Beyond the annual updates, smaller revisions, corrections and new content are added throughout the year as the language evolves and the community grows.

What's inside

At more than 600 pages, Meet Ruby covers Ruby in depth — from the fundamentals to advanced topics that most books haven't touched yet:

Believed to be the first book worldwide to cover RubyLLM, still adding more content!
Among the first books covering Ractors, Ruby's modern concurrency model

This is a book written by someone who has been using, teaching and writing about Ruby for over two decades — not assembled from documentation.

A commitment you can count on

I've maintained this book in Portuguese for over 20 years without abandoning it. That track record isn't accidental — it reflects how seriously I take the responsibility of being someone's primary Ruby reference.

For the English edition, I'm formally committing to at least 5 years of active maintenance and updates, conditioned on my health and well-being. If circumstances ever change, you'll be informed transparently and promptly. No surprises.

About the author

I'm the author of the first Ruby book ever published in Brazil. I've been writing, teaching and working with Ruby since the early 2000s — through every major version, every shift in the ecosystem, and every wave of new tooling. Meet Ruby is the distillation of all of that experience.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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