Here is a quick "how to" for anyone looking for basics.
Select one that is golden on the bottom, not green and hard all over. It should be fragrant, if you can't smell pineapple then it isn't ripe.
Twist off the top.
Slice off each end.
Stand on end.
Slice down each side to remove the outer rind.
This is the core in the center.
Slice down next to the core.
Toss the core into the compost, your garden will appreciate you.