Best Free Resources to Learn Python in 2025

Python remains one of the most in-demand programming languages in the world. Whether you want to dive into data science, web development, automation, or AI, mastering Python will open countless opportunities.

Here are some of the best free resources you can use to learn Python step by step in 2025.

➡️ CS50’s Introduction to Programming with Python
https://programmingvalley.com/course/cs50s-introduction-to-programming-with-python/

An excellent starting point for beginners. This Harvard course introduces programming fundamentals through Python, covering general-purpose programming, data science basics, and web programming essentials.

➡️ Python Notes for Professionals (Free eBook)
https://programmingvalley.com/book/python-notes-for-professionals/

This free eBook, compiled from StackOverflow documentation, provides concise explanations and practical examples. Perfect for both beginners and experienced developers looking to deepen their knowledge.

➡️ Corey Schafer’s YouTube Channel
https://www.youtube.com/@coreyms

Corey Schafer is widely known for his high-quality tutorials. His channel offers deep dives into Python, web development, APIs, and backend programming, with a strong focus on real-world applications.

➡️ Interactive Python Exercises on Exercism
https://programmingvalley.com/course/free-python-course-exercism-org/

Exercism’s Python track includes 141 exercises across 17 concepts. You’ll get instant feedback on your solutions, plus personal mentoring from the community—all completely free. A hands-on way to learn by doing.

💡 Final Thoughts
Whether you’re starting your coding journey or polishing your skills, these resources will take you from beginner to confident Python programmer. All are free, practical, and designed to help you learn effectively.