Yes you download it from getintopc.com. When you go to download it, you will get a file hosting message, but if you click on proceed, the file will download.
You can verify whether or not it is a legit copy by comparing SHA1 hashes from MS: https://technet.microsoft.com/en-us...Languages=en&PageSize=10&PageIndex=0&FileId=0 (Click Details, you don't need an account for that.)