Welcome back sir
I'm very happy you have returned. Have patience with yourself. I think it's great to start with a BnZ but when that fails you will most likely end up in a turn fight so you will end up learning that too. Stick with one aircraft for awhile and I agree that the Dora, (190D) is a fairly forgiving aircraft with excellent guns. On the assumption that you won't have many opportunities to have your gunsight on your enemy, the ability to kill them with one burst will help.
What is your in game handle please. I'm Zoney in game also and anytime you are on, if you fly Knights, you are more than welcome to tag along with me. I am an alt monkey however and you may not like the patience required if you want to have fights right away.
You can also PM me anytime and I will be happy to go to the Training Arena with you and give you a target to practice your gunnery on.