First, download the latest version of Python from the download page. Second, click the link for the latest stable version. Choose the Windows Installer (64-bit) option. Double-click the installer file to run the installer. In the installer window: Check Add Python to PATH at the bottom of the window.
Go to the official Python download page for Windows. Find a stable Python 3 release. This tutorial was tested with Python version 3.10.10. Click the appropriate link for your system to download the executable file: Windows installer (64-bit) or Windows installer (32-bit).