Modern leather requires little cleaning or special care.  Frequent dusting is the only real requirement.

If soil accumulates, remove using a clean, damp cloth without saturating the leather.  When leather furniture requires a more thorough cleansing, spot-test your leather cleanser in the least obvious area before using it anywhere else on the furniture.

Wrinkles certainly add character and a natural aged look to leather.  But you can easily slow the onset of wrinkles by fluffing and turning detached cushions and pillows regularly.

Blot any liquid spills on leather with a soft white cloth before using any leather cleaner.

Exposure to direct sunlight harms and fades leather over time. Keep leather pieces out of contact with direct sunlight.  Also, allow a couple of feet between leather furniture and any direct heat source, such as a vent or fireplace, which can directly dry out material.

Never use ink pens near leather furniture. Also, do not place printed materials on the leather as these may transfer ink onto the furniture and damage it permanently.