Coding Bootcamp Prep Online

Start learning to code today with our comprehensive free online coding bootcamp — 75+ hours of HTML, CSS, Javascript, and Ruby lessons. Our coding bootcamp prep course immerses you in programming from day one and is also the most effective way to get into today’s top coding bootcamps (including ours!).

Start your coding bootcamp journey

Rather than limiting your first experience with code to simple videos or lessons in one programming language or another, our free coding bootcamp prep course exposes you to programming fundamentals in HTML, CSS, JavaScript, and Ruby. Complete with projects that help you build your code portfolio, real time collaborative tools that connect you with fellow students and instructors, and on-demand support from our technical coaches, our coding bootcamp prep course is the most supportive and comprehensive way to begin learning to code – offering a true glimpse into the skills and proficiencies you’ll need to become a professional software developer.

Free Course (No Catch)

Our full 75+ hour free coding bootcamp prep course is exactly what it sounds like 100% free. No credit card required, no trial periods or expiration dates, so you can set your schedule and learn at your own pace.

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 developer

Coding Bootcamp Prep students take on the same introductory curriculum and interview prep materials we’ve honed in our immersive programs. Our free full stack web development course  teaches you programming fundamentals in both JavaScript and Ruby. Why two languages? To immediately prepare you to recognize patterns, abstractions, and commonalities between languages and to think like a true software engineer – ready to continue learning new technologies for any job.


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

Ruby was designed to make programmers happy. It’s expressive, accessible, and reads like English, allowing new programmers to focus on its underlying logic rather than syntax. Even beginners can start building right away.

Interview Prep

Units: Pre-interview Research, Phone and Video Interviews, Non-Technical Interview Questions, Approaching Code Challenges

Our Interview Prep Curriculum comes straight from the Career Services team behind our near-perfect student employment rate and includes many of the same practices we use to turn our grads into "no-brainer tech hires."


Units: Introduction to JavaScript, Functions and Scope, Data Structures and Looping, The DOM, jQuery

JavaScript changed the web from static, text-filled pages into the interactive experience it is today – and, as one of the most popular languages out there, it’s still bringing websites to life in new, exciting ways.

Start building your portfolio

At Flatiron School, students learn by building. Coding Bootcamp Prep students come away from the course with the beginnings of an impressive code portfolio to demonstrate their proficiency to coding bootcamp admissions teams.

Konami Code

Playing off an old gaming cheat code, students learn how to trigger an alert via certain keystrokes.

Built with: JavaScript, jQuery, HTML5

Rock Dodger

Students build a full dynamic game from scratch, programming a ship controlled by your arrow keys and animating falling rocks to avoid or else… *boom*.

Built with: Event Listeners, HTML5 DOM Updates, First-Class Functions

Tic Tac Toe with AI

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

Built with: Ruby, jQuery

Ready to unlock your future in tech?

Start learning the fundamentals of HTML, CSS, JavaScript, Ruby, and technical interview prep – 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 Bootcamp Prep really free?

Yes! Our Coding Bootcamp Prep course does not require any credit card information and does not have a time limit. You’ll begin learning to code alongside thousands of fellow students and have full access to 75+ hours of Ruby and JavaScript lessons and labs – as well as on-demand support from our Technical Coaches.

Is Coding Bootcamp Prep an actual free online programming bootcamp?

No, while Coding Bootcamp Prep consists of 75+ hours of HTML, CSS, Ruby and JavaScript lessons and labs, it covers just a fraction of the material in our 800+ hour Online Software Engineering program or 15 week in-person Software Engineering Bootcamps. Coding Bootcamp Prep is a free full stack development course that is designed to help you determine whether you want to pursue a lifelong programming career and whether you can successfully learn to code through our teaching techniques and technology.

If you do decide to pursue a programming career, our Online and In-person Coding Bootcamps provide an in-depth curriculum and unmatched career support.

Why should I take Flatiron School’s free online coding bootcamp over other free online learn to code alternatives?

There are any number of free courses that offer to help you learn to code for free online, but none match Coding Bootcamp Prep’s balance of on-demand support from technical coaches and fellow students, professional developer tools like a real development environment and Git-based workflow, and breadth of Ruby and JavaScript lessons and labs.

If I want to apply to Flatiron School, do I need to finish all of Coding Bootcamp Prep before doing so?

While making progress in our free courses is the best way to strengthen your application to our Online and In-Person Software Engineering Bootcamps, finishing the full Coding Bootcamp Prep course is not required to apply. This free course is meant to help you determine 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. As soon as you feel ready to commit your time and energy to an immersive program, you’re encouraged to apply to our Online or In-Person Software Engineering Bootcamps available in NYCWashington D.C.HoustonAtlantaDenverSeattle, and Chicago. (Note: It’s important to understand that your initial application and interview is a way for us to get to know you and for you to get to know us, and includes no technical questions.)