I have been playing for a while now and i am nearly level 20 but then i realized what does quick key does? can anyone tell me how to use it? that would be great thanks

I believe you are talking about the D-pad if so then you can add favorites to a small list for your d-pad by pressing triangle on any spell/weapon from the menu then simply press up during the game and you can quickly switch between spells/weapons

yeah on the dpad the up/down arrow shows the favorites but i am referring to the quick keys which is used by pressing the left/right dpad buttons. check the manual and you will see it. I haven't any clue what it does

You can select the favorites then on the direction press either left or right and equip something for that spot.

Example.
Say you have a sword and sheild equipped. Press left if you want a torch and right if you want a dagger or left if you want a spell and right if you want a bow. You can select whatever it is you equipped on the directional pad. Say if you have flames on the left key, if you press it twice you can dual wield it. It's a little weird but once you get it down it works well.

alright thanks, i will try it out in just a few sec. hoping that i get the hang out of it