If you have a spare computer available, install Ubuntu on it and then do your best to follow either of these guides:
https://forum.zcashcommunity.com/t/unofficial-guide-to-zcash-solo-mining/
If you don’t have a spare computer and you’re not so familiar with Linux, try installing something like VirtualBox on your existing windows computer and then install Ubuntu within VirtualBox. That way, if something goes wrong, the rest of your system will be unaffected.