If you only want profile layouts then HTML would help but for the entire profile, like how mine is, that'll be CSS coding! You do all of this thru your settings: profile editing (this is where you'll dump the HTML code) and this is for CSS! When pasting/working on codes, make sure to turn off WYSIWYG for profile so it won't ruin the layout/code!
One other note, in order to use CSS you'll need to get premium, so as of right now you can only use HTML. Hope that helps and good luck!