The most important thing to learn about silkies is that they are extremely difficult to sex before 4-5 mos. of age. Sometimes not till they crow or lay an egg. If you absolutely cannot have roosters, please buy pullets at point of lay, or laying hens. Silkies are very popular and rightly so. Most hens make good broodies and people often buy them just for that reason. They aren't the greatest layers, and since they go broody often, they aren't laying during those periods either. If that doesn't deter you by all means get some.
There is also another variety of silkie called "Showgirls," the name refers to males as well as pullets. They began as silkie crosses to turkens. They have the silkie personality, features etc. but, either a naked neck or a bow tie naked neck. You may want to check them out at "Showgirls thread." There are also several "Silkie" threads to check out.
Welcome to Backyard chickens. Silkies also make great house chickens.