I want MAC So Ceylon MSF, help....

is So Ceylon really the best? I've never bought an MSF before, and I hear a lot about that one and Shimpagne. Shimpagne was in a holiday set so I'm hoping to snag one at a cco.
How do you use them? how are they much different from a bronzer?
 
What is a CCO? There is a MAC store were I live, but they don't have it...how can I buy it from a CCO? Can someone get me the info for the CCO place to buy it from them? Thankssss!!