我的所有书都是教程式的指南，但是他们每个问题都包括为什么这样。

All my books are how-to, tutorial-style guides -- but all have the "why" behind them also.

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苹果的官方开发参考，包含开发指南、示例代码和教程。

Apple's official iPhone reference library for developers. It has everything you need to get started: guidelines, code-examples, tutorials, etc.

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要获得详细的指南，请参考这份简单的教程。

For detailed instructions, please follow this easy tutorial.

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