Intro to Ruby Online

Master the fundamentals of object-oriented programming in Ruby to build your own version of a classic game.

Start your coding journey

In this free intro course, you’ll learn programming fundamentals in a language programmers love and start your journey toward a coding career. 

Free Course (No Catch)

This full 30+ hour online course is 100% free. No credit card required; no trial period or expiration date, so you can learn on your schedule.

On Demand Support

Our on-demand team of Technical Coaches is ready to help you get unstuck when you need help – broadening your understanding by helping you find a solution to a lesson, not solving it for you.

Explore Your Future in Tech

This course is the best way to experience Flatiron’s curriculum, community, and culture firsthand – and to explore whether you’re passionate about pursuing code as a career.

Rapid, Rigorous Education

This course is the most efficient way to get real hands-on experience with the programming fundamentals and interview tactics you’ll need to get into the top coding bootcamps.

Start thinking like a software engineer

Students take on the same introductory Ruby curriculum we’ve honed in our immersive programs and come away from the course with the beginnings of an impressive code portfolio to demonstrate their proficiency.


Ruby was designed to make programmers happy. It’s expressive, accessible, and reads like English, allowing new programmers to start building right away.

Topics covered: Debugging, Variables and Arrays, Methods, Command Line Applications, Logic and Conditionals, Loops and Iteration, Object Orientation

Start building like a software engineer

At Flatiron School, students learn by building. Use your growing Ruby skills to form the beginnings of an impressive code portfolio that will help demonstrate your proficiency for coding.


Students build a fully executable, object-oriented program: a two-player game of Tic-Tac-Toe, written in flexible, well-structured code that’s easy to debug and maintain.

Built with: Ruby, jQuery

Ready to learn how to code?

Start learning Ruby basics – for free and on your schedule. Setup is quick and works on virtually any computer so you can be coding in minutes.

You have questions; we have answers

Is Intro to Ruby really free?

Yes, our Intro to Ruby course does not require any credit card information and does not have a time limit. You’ll begin learning to code alongside a community of fellow students and have full access to 30+ hours of Ruby lessons and labs – as well as on-demand support from our Technical Coaches.

Do I need to finish all of Intro to Ruby to apply to Flatiron School?

While making progress in our free courses is the best way to strengthen your application to our Online Web Developer Program and NYC Software Engineering Immersive, finishing the full Intro to Ruby course is not required to apply. This free course is meant to help you gauge whether you want to pursue a lifelong programming career, and whether you can successfully learn to code through our teaching techniques and technology.

Our admissions team primarily wants to see consistency in how you’re preparing. You’re encouraged to apply for our Online Web Developer Program or NYC Software Engineering Immersive as soon as you feel ready to commit your time and energy to an immersive program. (Note: It’s important to understand that your initial application and interview is a way to for us to get to know you and for you to get to know us, and includes no technical questions.)