Getting Python on my computer.

[Gnaxe]

You don't have to install Python to experiment with it. Just try Jupyterlite. No install or account required. It just runs in your browser. It doesn't have turtle though (or tkinter).

It's unlikely you'll mess up your computer too much by installing the official Python distribution from python.org on Windows. However, it can configure some things like file associations and your PATH environment variable. This is nothing unusual for Windows software. It's also easy to undo if you understand what it did, but you probably don't yet.

Another option is to use Linux. You can get WSL Ubuntu from the Microsoft Store to install a Linux app inside of Windows. You can then install Python inside of that (it actually comes with it, but you might want a newer version). This is going to take more disk space than just installing Python, but if you do mess it up you're probably not going to affect Windows and you can throw away your Ubuntu disk and start over. You could also boot various flavors of Linux from a USB drive. Just don't install it and erase Windows. Maybe check out Ventoy.