An XIB file usually contains exactly one view controller (and many objects as part of this view controller).
And the storyboard (essentially, essentially) is a collection of XIB files compiled as segues, so you can follow the stream.
What you really want to do here, simply replace the word โXIBโ with the word โStoryboardโ in almost any tutorial that you look at, bearing in mind that without a storyboard, you will not use segues to move from the view controller to the next controller.
And here is the UICollectionView tutorial, which you can link to, what happens to talk about xib files, for download . I hope this information helps you!
Michael dautermann
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