Explain your audience - Know who your audience is and Develop personas to pin down their soreness factors. Don’t try to focus on everyone!???? ??????? ????? ?????????? ??? ??????? ???????????, ???? ????????? ???????? ??? “???????” ??? ??????????? ??? ??? ??? ???? ????????? ??? ??????????? ??? ??????, ?????? ??? ????? ??? ???? ???? ???? ???? ?