https://www.raywenderlich.com/113388/storyboards-tutorial-in...
like anything, best way to learn is just to hack on something. Follow the tutorial, then break it. Mess with control dragging between VC's to setup different segues. Try passing data between VC's using segues. Then try loading a VC from a storyboard in code (hint: use instantiateViewControllerWithIdentifier).