We can download the latest version of Windows 10 for free at the microsoft website.
In the movie you will see that you can download a iso file when you are on a mac. Check the first movie.
Since this movie was made on a mac, running an exe file will never work.
On a windows you will see a different page and you will be asked to use the download load of 32/64 bits. See the last movie.
Now we have an iso file or an usb, we can start installing windows 10.