What are hair coils for black women, what do they look like?

I have natural hair, no chemicals, I'd like to try a different short style, someone mentioned getting hair coils. I not sure what these are or what they look like. If someone out there can show me a picture of hair coils or give me a website that I might visit. ThanksWhat are hair coils for black women, what do they look like?
There are 2 types of coils. One is done with very skinny %26amp; small flexi rods that you can usually purchase at a sallys beauty supply store. And then there is a pin curl, its mostly done on neck lenght and longer, it usually done by finger curling.



Coil w/ flexi rod:

http://www.roshini.net/images/2003/2003_



http://media.photobucket.com/image/coils





Pin Curls:



This is how it looks when you set them

http://forum.blackhairmedia.com/uploads/



This is how they look when done (over night)

http://forum.blackhairmedia.com/uploads/