Whether you want to use the official SDK or toolchain for iPhone development, you need to read some related knowledge to get started. Here are some materials that you are recommended to read.
First, we recommend the Three Treasures of Lucas Newman. He has been hired by Apple recently:
18-page pdf Tutorial: briefly describes how to develop an iPhone.
Xcode template: This is not recommended currently. Recommended: Compile and build an unofficial iPhone toolchain development environment in leopard and integrate it into xcode
Three examples: coin flip, three-axis gravity sensing, and how to use the network.
Then there is Apple's official development site: http://developer.apple.com/iphone/
There are many documents and examples, including: Getting Started Guide, Getting Started documentation, iPhone development documentation, and a batch of official SDK examples.
The website of Erica Sadun has a list of classes and method names of the iPhone toolchain framework.
IPhone cracking leader Jonathan Zdziarski's website, you can see some new news: http://www.zdziarski.com/
IPhone devdocs should be one of the popular iPhone development forums.
In addition, Chinese documents:
Dr_watson's "learning how to develop full records of self-made games on the iPhone/iPod Touch" is almost the best Chinese iPhone development instruction currently available.
However, it is a pity that Chinese development websites, in addition to cocoachina, weiphone, and the all-around iPhone devices, seldom see information about iPhone development, other forums or websites that claim to be about iPhone development only copy some materials, neither popularity nor original content, which is undoubtedly quite uncomfortable.
If you are interested in developing some iphone software recently, we recommend that you read the above materials. If you have recently written some articles about iPhone development, you are also welcome to share this with cocoachina.