I saw tons of tutorials of how to edit the user profile [change background, fonts, etc], but none of them tell me where I need to click to add and change all the codes D: Is one of the options in the Edit Profile menu? My english is far from perfect but none of the options sounds like what I'm looking for :s

hover over the personal tab > dashboard > profile

Ahn.... The "Profile Text" field? If so, I thought this was only to add text x-x thank you

yes, it's not very clear... or cleat at all, but you can enter your css and text there