Q:
Help a newb out please
A:
Choosing a particular headband just gives your character that item when you enter the game; it has no effect on his/her storyline or abilities. These are items you can only get through picking them in character creation, though, so they’re fairly unique.
I’m not sure. I think it is purely for RP or flavour. I’ve not seen it impact my elementalist (at lv 37) yet, so I doubt it has any significant or gameplay influence.