Linux people, Linux but you will have to relearn or redo some things again, for those who have a problem with Windows platform.And if you want to see, that is, to become aware of some things and processes on the Internet and on your personal computer that you were not previously aware existed or were taking place.And of course things are simple. But only if you have the will and desire to learn.
1.for beginners I recommend Ubuntu Linux
2.and of course for an advanced user I recommend Debian Linux
Your choice.That is if you want your computer/machine to be yours and only yours again.