G'day azurnicolas, Welcome to Linux.org
Depending on the specs of your pc/laptop. You have not given us any detail re your pc etc....so I would start with
Linux Mint 21.2 .......either the Cinnamon DE or the XFCE DE
If you give us your spec first, we can narrow that down a bit for you
In a nutshell......use Balena Etcher to attach/burn a Linux iso to a thumb drive
For simplicitie’s sake use Linux Mint ....it looks a great deal like windows but that is where the likeness ends
Boot your PC to that usb
I WILL NOT harm your pc...it installs in ram...memory...it does not affect the hard drive or ssd etc ect
The ONLY way it can get onto the hard drive /ssd is if you double click on install linux mint....which will be on the desktop
Just take it for a run....manouvere around...open and close things....download stuff if you want to.....HAVE A GOOD HARD LOOK....dont try to be gentle with it....give it hell.
When you decide you have seen enough....just click on menu, then on the red quit button...and choose to Reboot.
It will start to reboot,,,,and the pc screen will tell you to take the usb out, and then hit enter.
The pc will reboot and you will be back to windows.
Note:: What you have just done on the 'Live" version of Linux Mint WILL NOT be saved......everything that you installed or opened/changed etc etc etc ...will be GONE
If you boot to the usb again...it will be like new...untouched.
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You have a lot to learn. trying a distro in LIVE mode is a good first step. You learn by doing.