I’m considering switching to linux but I’m not a computer savvy person, so I wanted to have the option to switch back to windows if unforeseen complications (I only have 1 pc). Is it just a download on usb and install? And what ways can I get the product key or “cleaner” debloated versions.
You can keep windows and install Linux next to it.
The best way would be to add a new ssd or m.2 card to your pc and install Linux on that. Make that the main boot device and Linux normally will detect Windows and give you a boot menu where you can chose between Linux and Windows each time you boot.
Alternatively you can resize the windows partition and install Linux onto free space on your main drive. This is more fiddly and things can go wrong with this if you don’t know what you’re doing.
You can also boot Linux on an external USB drive but this will be slower and may guge you a false impression of Linux. You can also try Linux in a virtual machine like Virtualbox but again this will be slower and will give you a false impression of Linux as a daily driver OS.
I personally run a dual boot system - I have two m.2 nvme drives, one with windows and one with Linux. I barely use the windows partition now but I keep it around for rare work stuff or the rare occasion I have a game I can’t get to run in Linux. And I mean rare - booted Windows maybe 3 times in last 6 months.