It will help keep the bulb healthy longer if you clean off the yecchy outer skin. Bulb mites like to hide in this outer skin which is usually in some state of decomposition. It usually looks better than the ones you buy in the store once cleaned. Curing dries the outer skin and toughens it. Therefore, you will need to use thin surgical-type gloves to clean them so you can feel how much pressure to use to rub off the yecch.
Some people vary the use of names for different looking flowers, but that is the only difference.
Planting them is about the same as Tulips. They seem to be less tolerant of shade. They need to go about 8 inches down in this area according to most guides. Plant them on the shallow side if you intend to divide them later. I'm not issuing a Work Alert on these because they rarely need dividing.