iOS Getting Started notes

Below are some Apple references materials that I follow when starting out iphone dev sometime ago. It's more or less in order of reading from the introductory/basic to specific  :

•  IOS First App. Useful to get the feel of the overall development.
•  Objective-C Programming Language
•  Cocoa Fundamental Guide. Explore the main/core Framework being used in iOS development.
•  iOS App Programing Guide. Discuss things like how the program actually execute on the device and how it relate to the code.
•  Tools Workflow Guide for iOS. Discuss things like the deployment to device, testing, etc..
•  XCode4 User Guide, Getting familiar more with the IDE would help a lot in day to day programming
•  iOS Human Interface Guidelines. Some guidelines on GUI component usage and conventions. 

Later on, I find the book "Programming iOS 5 Second Edition" by Matt Neuburg pretty much cover all of the above in one nicely structured book made me wish I had it when starting out. It's the most balanced book on the subject and very suitable for early learning since it give the basics a very good treatment. The book gives a solid foundation for more advanced subject. Still, reading the official documentation from Apple would give the most up-to-date and detailed coverage (with the down side that it is  not being too convenient for casual reading). So, it's a good complement for the formal references.