HTML anyone?

Does anyone know XML and/or HTML by any chance? I haven't messed around with that stuff since the MySpace era. I'm having trouble with the buttons above that read "Posts RSS", "Comments RSS", and "About Me."

How do I get them to go to their specified link?? I've tried to mess around with the script off of the template I got but all I get when I click the links is either jibberish or the "Sorry, this page is not found" message. What do I do??