Well that would kinda depend on the plant. They grow in two forms, tree-like or in a rosette. There are over 40 different species of the yucca plant, plus there are indoor and outdoor types. You apparently are talking about the outdoor or tree- like type which is pretty simply. Put on a pair of gloves and just start at the bottom and remove or peal off the dead leaves working your way up the stalk. Fertilize a couple of times a year or season.