to elaborate on what sparky said.
your quickcast marker can only be used to cast a quick spell (not any other quick action, just a quick spell)
your action marker, lets you do anything that a creature can do with thier action marker.which is
1) do a full round (hourglass) action. including casting a full round spell, or a full round attack granted by your card or equipment, or some other card in play (ie opening the gate to hell)
OR
2) Move, and do a quick (lightning bolt) action. including but not limited to casting a quick spell, a quick attack granted by your card or equipment, or some other card in play, or you could guard.
since the move part of number 2 is optional you can stay where you are and cast 2 quick spells (one using your quickcast action and one using your normal full action.)
note you can not cast a spell instead of moving, and therefore get 2 quick spells with just your full action marker. movement has to be your first action. and if you choose to cast a quick spell you cannot move after either.
hope that clears things up, i probibly over explained it but oh well hope i didnt confuse you more.