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  1. Learn to Code - for Free | Codecademy

    Grow in your career and unlock new opportunities by learning in-demand skills in AI, data, coding, cybersecurity, and more.

  2. Best Computer Science Courses & Certificates [2026] | Coursera

    Computer Science courses can help you learn programming languages like Python and Java, algorithms, data structures, and software development principles. Compare course options to find …

  3. HarvardX: CS50's Introduction to Computer Science | edX

    An introduction to the intellectual enterprises of computer science and the art of programming.

  4. Teach Yourself Computer Science

    Type 1 engineers find ways to learn computer science in depth, whether through conventional means or by relentlessly learning throughout their careers.

  5. How to Learn Computer Science from the Ground Up: A Beginner’s …

    So you want to learn computer science but don’t know where to start? Whether you’re a career changer, a curious student, or someone looking to build tech skills, diving into computer science can feel …

  6. Practice Computer Science - Brilliant

    Take a guided, problem-solving based approach to learning Computer Science. These compilations provide unique perspectives and applications you won't find anywhere else. Browse through …

  7. Computer Science 101 I Stanford Online

    Learn the essential ideas of Computer Science, this course demystifies and brings those patterns to life, which is useful for anyone using computers today.

  8. CS50: Introduction to Computer Science | Harvard University

    An introduction to the intellectual enterprises of computer science and the art of programming.

  9. Learn CS Online: An Introduction to Computer Science

    We'll teach you the basics of programming and computer science. Then you can and will change the world. Ready to go? Start here.

  10. 11 Best Computer Science Courses Online in 2025 [Free + Paid] - Hackr

    Want to learn computer science? We’ve found the 11 best computer science courses in 2025 to learn programming, data structures, algorithms, and more.