In this tutorial you'll learn NumPy (Numerical Python) step by step, starting from the basics and building up to the level you need for data analysis, scientific computing, and machine learning foundations. You can crunch numbers with Python lists too, but once the data starts piling up, NumPy gives you a huge boost in speed, memory efficiency, and formula calculations.
As you go through this page, copy the code and actually run it. Don't just glance at the output — think about "what did this line actually change about the data?" too, and you'll pick up NumPy much faster.
What's Next
Start by opening What is NumPy? and see what actually sets a Python list apart from a NumPy array.