Check out here to know what version of windows you can run on your Mac. While you will require a paid version of Windows 10, luckily Microsoft is still offering a free version of windows 10 to users and you can try your luck on this website. You can download the Windows 10 ISO file and save it on your PC where it is easily accessible to you. It is recommended that you have an additional USB stick of around 16 Gb for additional driver software that will be required by Windows.