iPhone a mobile of passion, usability, smartness and definitely it makes you feel different. So far iPhone is one of the most selling phones in the world. According to the report released by Neilsen in their Q1 data iPhone OS is the second largest market share holder in Smartphone market worldwide. According to their Q1 2010 report iPhone OS is holding 28% of market share. Recent report published by Net Applications on May 2010 shows that after JAVA ME iPhone is the second largest mobile browsing platform holding 30% to 32%. That means who ever related to or thinking of start with mobile application development in business sense iPhone OS could be one of your best choice.
Hence iPhone application development goes through several process. All the application developed for iPhone, iPad or iPod are officially registered with App Store. What ever applications you make if you like to get a better place to feature that it is ideal to include that with App Store but for doing that you have to register as an application developer with Apple Development Program. You can register for free as a developer and download the SDK for iPhone app but to join Apple Development Program you have to pay one yearly rate of $99.
To get better overview on how to start with iPhone application development you can read this article which is quite helpful -> iPhone App Development – Where to Start
Here in this article I will be including a list of good books which may help you start with your iPhone application development.