FREE Introduction to Computer Science From Harvard University

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What you'll learn

• A broad and robust understanding of computer science and programming
• How to think algorithmically and solve programming problems efficiently
• Concepts like abstraction, algorithms, data structures, encapsulation, resource management, security, software engineering, and web development
• Familiarity in a number of languages, including C, PHP, and JavaScript plus SQL, CSS, and HTML

For more information
https://www.edx.org/course/introduction-computer-science-harvardx-cs50x