Dont install it, yet. Make a bootable usb stick with balena etcher and put a linux distro on it (I highly recommend mint, pop_os or ubuntu (standard version) as ISO on it.
Ubuntu is very controversial in the more advanced sphere but I learned on it and its great for beginners.
If you want to go a little bit over the top download ventoy and put it on the usb instead. You can then put as many ISOs on there as you can fit and just select one of them at boot.
The most important part for beginners is the desktop environment anyway so gnome should be fine. If you have tried it for more than an hour and still feel like this could be fun, click install and give it a go.
You could also dual boot but windows might fuck you over since they‘re not great neighbors as an OS.
Feel free to ask if you want to know more. Good luck.