If they are fresh vegetables you just purchased, then wash them at least 2 times to ensure that they are clean and any trash is picked out of them. (If they are already blanched and frozen, let them thaw and skip to Step 2.)
Place them in a pot, add water to cover the vegetables, and then place them on the stove at med-high heat for at least 30 minutes to an hour (depending on variety). Lady fingers, sandy, white acres, and other young/green peas need to cook longer than any different varieties.
Add your flavoring. That can be olive oil with salt and pepper, Goya seasoning, or a piece of ham or bacon. Season them to your personal tastes.
Once they are finished cooking, remove them from the heat and serve. They should be tender and not hard or crunchy.