Most ceiling fans can take a light kit. If there is a threaded pipe and nut in the bottom of the motor housing, most standard light kits will be compatible. If not, contact the manufacturer of the fan to find a compatible light kit.
The best ceiling fan lights are the ones that give indirect light ABOVE the motor (often hidden in the motor!). These produce a pleasant, non-irritating light and don't create annoying shadows when the blades are in motion. The next best choice is a down light kit below the motor that produces NO upward light.