Really theres not much to do in Zekes besides try to sucker someone into a turnfight. It can't climb away from most planes after the EW set (though it does zoom well), its controls lock up at relatively low speeds in a dive (and pulling out too hard can break a wing), and its definitely not fast enough to run down anyone from low 6 or to run away when you lose the advantage.
Can't even really HO in it, its so fragile that a few hits will tear off a wing or knock out the engine (or start a fire, or kill the pilot...) I got 3 or 4 A6M2s in a P-38G yesterday because I kept suckering them into trying to dive with me and then I could just pull up and leave them miles behind. They were just as dead trying to loop fight or HO, as soon as they showed their belly they were either wingless or on fire (or exploded).
You need to really have a good combination of e-management, SA, marksmanship, and luck to consistently do well in a Zero. No two fights are the same, you can mop the floor with it one flight and get your oscar handed to you on the next 5.
My best advice is to just stick with it exclusively until you feel comfortable with it, the only way to really master any plane in here. Everyone flies every plane different. Plus you have to make sure you can enter a fight in control and pick your battles. Very small margin for error in that rice-paper kite.