General Discussion2013 start 2015 stop - 2017 BACK TO DOTA again plz help

HI so many hero now and changes in dota 2 ill start playing dota since 2013 and 2015 ill not playing any more but im back again but my old acc is not log in any more mybe i dont know the pass any more but what is vhs im new in dota2buff not in dota what is this my mmr in my old acc is 4100 can you tell me what is my calibration if i get there sorry not good in english