do you need to buy windows code example

Example: how to use windows for free

All you need to do is download WINDOWS LATEST VERSION, and then install it, then down the bottom it has the 'skip' button where you dont have to run the code
As you'll see, the 'skip' runs out and you can't run it.
You'll need access to the files and route the communications back to 127.0.0.1 (local adress) and you'll need to code it to let it run (get a cracked version)
Then you won't run out of 'skip'.
But this is illegal. You can probably save the work and download a cracked version.
Or run a VCM (virtual computer machine). You can do this on all OS's, and you'll be able to use your VCM offline (it does take up a lot of storage)