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Harvard University via YouTube Video playlist

CS50x 2024 Lectures

Overview

This is CS50, Harvard University’s introduction to the intellectual enterprises of computer science and the art of programming, for concentrators and non-concentrators alike, with or without prior programming experience. (Two thirds of CS50 students have never taken CS before.) This course teaches you how to solve problems, both with and without code, with an emphasis on correctness, design, and style. Topics include computational thinking, abstraction, algorithms, data structures, and computer science more generally. Problem sets inspired by the arts, humanities, social sciences, and sciences. More than teach you how to program in one language, this course teaches you how to program fundamentally and how to teach yourself new languages ultimately. The course starts with a traditional but omnipresent language called C that underlies today’s newer languages, via which you’ll learn not only about functions, variables, conditionals, loops, and more, but also about how computers themselves work underneath the hood, memory and all. The course then transitions to Python, a higher-level language that you’ll understand all the more because of C. Toward term’s end, the course introduces SQL, via which you can store data in databases, along with HTML, CSS, and JavaScript, via which you can create web and mobile apps alike. Course culminates in a final project.

Videos in this playlist 12

  1. CS50x 2024 - Lecture 0 - Scratch
  2. CS50x 2024 - Lecture 1 - C
  3. CS50x 2024 - Lecture 2 - Arrays
  4. CS50x 2024 - Lecture 3 - Algorithms
  5. CS50x 2024 - Lecture 4 - Memory
  6. CS50x 2024 - Lecture 5 - Data Structures
  7. CS50x 2024 - Lecture 6 - Python
  8. CS50x 2024 - Artificial Intelligence
  9. CS50x 2024 - Lecture 7 - SQL
  10. CS50x 2024 - Lecture 8 - HTML, CSS, JavaScript
  11. CS50x 2024 - Lecture 9 - Flask
  12. CS50x 2024 - Cybersecurity

Advantages and disadvantages

Advantages

  • One of the best-taught programming courses in the world, by David J. Malan and his team.
  • Problem sets are real projects that stay on your GitHub.
  • Free certificate from CS50 when you finish on cs50.harvard.edu (the edX certificate is paid).
  • Active community on Discord, Reddit and Ed for help at any hour.
  • Free and complete: every lecture is in the playlist, in order.
  • Watch at 1.5x, skip what you know, rewatch what you don't.
  • Taught by Harvard University, one of the strongest names in its field.
  • 2,194,733 views, so help and notes are easy to find.

Disadvantages

  • Problem sets are hard and take far longer than the videos; plan 10–20 hours a week.
  • Lectures are long (about 2 hours each).
  • No certificate, deadlines or graded work.
  • Quality and depth vary: check that the playlist is finished before you start.
  • No certificate.
  • No graded assignments or feedback.

Some points apply to every course of this kind; see how we rank.

Free

  • Free: Watch on YouTube, no account needed.
  • Certificate: None. Code or take notes along to make it stick.

Harvard University is in Tier 1: world-leading universities and India's top institutes of our institution ranking (98/100). CS50 and HarvardX are among the best-taught courses anywhere.

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