Internet stalker stalking me on youtube ?

so this guy on youtube is really mad at me cuz i commented on his video and i have a cheesy website i made with go daddys insta page and this guy crashed my website and them he messaged me on youtube and i told me my address and personal info how did he get it ?? i am worried any help ? if you know how to get his personal info please tell me ?? thanks remember 10 easy points