??? ?? ???????? ????? ????? ????????. ???? ??? ????? ????? ??????? ????????????.??????????? ??? ??????? ??? ??????? ?????? ??????????, ?? ?????????? ? ?????? ?? ??????? ?? ?? ????????? ???????????? ??? ????????.On this lesson, you are going to learn how to evaluate the place your users arrived from in the first place, or, through which marketing ch