I'm not trying to persuade you to abandon that operating system.  You must, of course, use it according to the 45 pages terms you have agreed to by the mere act of using it, even if you personally didn't pay for it.  http://pastebin.com/72ddu69H  I am pretty happy not having to use my computer without having to agree to any similar terms.  All in all, I myself am not comfortable with any company monitoring my every keystroke, my contacts, my speech, my calendar events, my handwriting patterns and my emails, however, and I do have Microsoft file compatibility in my free software office suite.   Happy Computing !  https://imgur.com/9DoVoix