Here is a link that doesn't require a login: http://developer.apple.com/library/mac/documentation/NetworkingInternet/Conceptual/StoreKitGuide/APIOverview/Overv

Here is a link that doesn't require a login: http://developer.apple.com/library/mac/documentation/NetworkingInternet/Conceptual/StoreKitGuide/APIOverview/OverviewoftheStoreKitAPI.html http://developer.apple.com/library/mac/documentation/Network...