I want to create an iAdBanner in my SpriteKit game, but i don't know how it works. Could you help me? I haven't written any code yet, so I think I don't need to post my code. Thank you!!
iAd has been discontinued, you will have to choose another ad provider.
From Apple's site:
The iAd App Network will be discontinued as of June 30, 2016. Although we are no longer accepting new apps into the network, advertising campaigns may continue to run and you can still earn advertising revenue until June 30.