I know how to edit it but I just don't know how to get to it. I have done it before by accident so I know there is a way. Please help!
for google chrome i highly suggest you right click and then say inspect element. a small bar will open up at the bottom of chrome and then every time you scroll over a part of the code, then the part of the page that the code controls will highlight. making it very easy for you to see what the codes control :)
If you are talking about viewing source code of a page, then you can simply right-click and view source code. If you're on Chrome, you can hit Ctrl+U, in IE, hit F12.
Do you mean right-clicking and then "view page source"?