How to activate Hard mode on Terraria

Hello there people of Terraria and such this is 0RandomGamer0 here and uhhh..... i am here to teach/tell you how to activate hard mode along with telling you other things such as the ladder to the hell world etc. Anyways i hope you like this video or the fact this tutorial helped you....please like comment and subcribe for more and don't be afraid to ask if you want more tutorial videos :D :D :D :D :D :D I do not own the music so Youtube don't rape my ass about copyright heres the link to the video: http://www.youtube.com/watch?v=kg9e33bmn58