Explain your audience - Know who your audience is and Establish personas to pin down their agony details. Don’t try out to target Everybody!???? ??????? ????? ?????????? ??? ??????? ???????????, ???? ????????? ???????? ??? “???????” ??? ??????????? ??? ??? ??? ???? ????????? ??? ??????????? ??? ??????, ?????? ??? ????? ??? ???? ???? ???? ????