How do you edit a game's genre?

Actually, this is a multi-faceted question. How do I edit any of the sections under "General Information" on a game page? I assume this has been asked before, which leads to my second question: how do I access (or is there even a way to do this) questions that people have already asked about editing? I ran a search for "add genres" and it turned up no results. Thanks for helping a n00b.

This is currently broken. The Edit link to the right of where it says General Information should allow you to change things, but as of this post only the release date is changeable (you can go to the developer / publisher page and add the games there, however). I usually just check the Bug Reporting (or Editing & Tools, if it isn't a bug) forum and look at the most recent threads. There is one about this topic.

Thanks a ton! I spent literally minutes trying to figure this out. 

This has been fixed, apparently. So now you can go click on the Edit link and add / change stuff. ^_^