Transfer data between ViewVontrollers

i can't see to figure out to pass data between viewcontroller. I think Delegate is the way to go but nothing works. Look at the PostView story board, i need to grab the following info from these VC and bring them till the last VC: 1- PostviewControllerInitial : task name selected 2- PostviewController :task title + task description + 3 images selected 3- PostviewController2 : postal code + regionpicker i also have 4 errors in the [login to view URL] file, can you look at it ?