Winbond chip help

So I’m kinda dumb in schematics so can someone please make a small explanation for me?
(like Vcc goes here
gnd goes there
this port goes here etc)
Or take a photo of and Arduboy homemade with this addition(with wires of course) please,
And by the way, what else do I need (except the Winbond chip itself)

It’s all here:

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