If you buy a whole pineapple, you need to cut and trim it. Trimming and cutting a pineapple may seem like a daunting task, but a pineapple cuts up pretty easily:
Lay the pineapple on its side on a cutting board, then cut off the top and bottom.
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You want to remove the fronds from the top, and just take a slice off the bottom.
Set the pineapple upright and cut off the eyes.
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Be sure to use a sharp knife when cutting a pineapple.
Cut the pineapple in half.
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Cut it lengthwise, down to the cutting board.
Place a pineapple half on the cutting board and cut that half in half, lengthwise.
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Repeat this step with the other half.
With the pineapple quarters together, cut them perpendicular to the length.
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You end up with quarter slices of pineapple.