Best Programming Languages?

I'm new here, and to be honest I'm about as rookie as a programmer can get. I only know HTML5 yet (the millions of drag and drop programs I used to do when I was a kid don't count because... well, they're drag and drop, Bro. neither does any WYSIWYG programs.) Point being the only official language I know Is HTML5 so I'm nowhere even close to being a hacker, the only thing I can do yet is pinging. Anyway. I read this book "Don't Turn Around" in part about a group of hacktavists getting caught and that led to research and I fell in love with Nullbytes.. However, to the point, I'm lost on what the best programming language I should leaen after HTML would be. Suggestions?