📚 7 Best Websites to Learn Computer Science Subjects for Free

Struggling with subjects like DSA, DBMS, OS or Computer Networks? These free resources can make learning much easier

1. GeeksforGeeks 🧑‍💻
• DSA, DBMS, OS, CN and more
• Notes, articles, problems and tutorials
🔗 https://www.geeksforgeeks.org/

2. freeCodeCamp 🎓
• Programming, web development, Python and more
• Free courses with hands-on learning
🔗 https://www.freecodecamp.org/

3. CS50 by Harvard 🧠
• Excellent introduction to computer science
• Covers programming, algorithms, memory, databases and more
🔗 https://cs50.harvard.edu/

4. Neso Academy 📖
• Detailed lectures on OS, CN, DBMS, DSA and other CSE subjects
• Great for concept-based learning
🔗 https://www.youtube.com/@nesoacademy

5. W3Schools 🌐
• Learn HTML, CSS, JavaScript, SQL, Python and more
• Simple explanations with interactive examples
🔗 https://www.w3schools.com/

6. MIT OpenCourseWare 🎓
• University-level computer science courses
• Lectures, assignments and study material
🔗 https://ocw.mit.edu/

7. roadmap.sh 🗺
• Structured roadmaps for different tech careers
• Useful for planning what to learn next
🔗 https://roadmap.sh/

💾 Save this list for your next semester

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Here's a small fact about Python 🐍

The := operator is called the "walrus" because the symbols resemble the eyes and tusks of a walrus 🦭

It was introduced in Python 3.8 and allows you to assign a value to a variable and use it directly within the expression at the same time.

For example:

while (line := input("Say something: ")) != "quit":
    print(f"You said: {line}")

Without it, you would have to retrieve the value separately using input(), and then check it.

Have you ever used the := operator in your code?

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