Find faces faster
Photos lets you index your images according to who’s in them. Get started by clicking Albums followed by Faces. You’ll be shown a strip of faces it has already found in your pictures (and likely some false positives, such as pets and inanimate objects). Apple’s instructions are to double-click one and type that person’s name. Doing this for every picture is tedious, but you can save time after you’ve named someone just once by dragging any suggestions of the same person from the strip onto their circle in the top part of the window. They’ll be named automatically.