what hardware do i need to start djing.

hi all. i am not sure if this is the right section to help a newcomer out, but please move the thread if this is the case!

alright so.. i am planning to buy the dj control air+. after buying the controllerx what would i need to start djing? of course i do own a laptop and headphones. i am just worried about if i need any more cables.

thanks in advance guys.