User blog:PoisonIvy100/Userboxes, userboxes

Hi, does anyone know how to create a userbox? I did look up the Victorious wikia one but it was so confusing. I didn't even get past step 1, so that didn't work. When I typed in the code as the title it said invalid title. Does anyone know what this even means? Plus what does it mean when it says change to source mode? Can someone PLEASE tell me how to do it? Thanks! Brought to you by MaraJaffray100.