Need iPhone Human Interface Tutorial!

I have just spent little time with iOS. Anybody can tell me how to construct a nice Human Interface in iPhone. Give me advices, tutorials开发者_C百科 or something help me to learn how to construct a nice iPhone Human Interface. Thanks:)

Have you read Apple's Human Interface Guidelines document? It's available from http://developer.apple.com/iphone/library/documentation/userexperience/conceptual/mobilehig/Introduction/Introduction.html

Have you looked at this document? It surely is the starting point for everyone programming for iPhone/iPod touch/iPad