How to remove author from post info

hi guys , I know this has been asked meny times but I noticed that answer is different in every case , depending on the theme ur using . could anyone point me into right direction of how to remove the tabe of author and date of post and “about author” section. basicly I want to remove any visable info about author or date and time of the post . thanks ! heres the link to website that I want to remove author on https://eg-techreviews.com/htc10buyonline/