《iOS Technology Overview》（iOS 技术概述）介绍可在 iOS 应用程序中使用的框架和其他技术。https://developer.apple.com/library/content/documentation/Miscellaneous/Conceptual/iphoneOSTechOverview/Introduction/Introduction.html#//apple_ref/doc/uid/TP40007898《iOS Human Interface Guidelines》（iOS 用户界面指南）教您如何让您的应用程序符合 iOS 用户界面规范。https://developer.apple.com/ios/human-interface-guidelines/overview/design-PRinciples/#//apple_ref/doc/uid/TP40006556《App Distribution Guide》（应用程序分发指南）带您逐步完成这些过程：开发应用程序，预备测试设备，提交应用程序到 App Store。https://developer.apple.com/library/content/documentation/IDEs/Conceptual/AppDistributionGuide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40012582《Programming with Objective-C》（使用 Objective-C 编程）描述如何使用 Objective-C 程序设计语言定义类、发送消息、封装数据，以及完成各种其他任务。https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/ProgrammingWithObjectiveC/Introduction/Introduction.html#//apple_ref/doc/uid/TP40011210《iOS App Programming Guide》（iOS 应用程序编程指南）讲解在开发 iOS 应用程序时，您必须要了解并做到的基本事情。https://developer.apple.com/library/content/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40007072
2. 下架的开发帮助文档
可以按其步骤练习阅读：https://developer.apple.com/legacy/library/referencelibrary/GettingStarted/RoadMapiOS-Legacy/chapters/JumpRightIn.html《Your First iOS App:HelloWorld》（您的第一个 iOS 应用程序：HelloWorld）向您讲解如何编写第一个程序。https://developer.apple.com/legacy/library/referencelibrary/GettingStarted/RoadMapiOS-Legacy/chapters/RM_YourFirstApp_iOS/Articles/00_Introduction.htmlHelloWorld源代码下载《Your Second iOS App:Storyboards》（您的第二个 iOS 应用程序：串联图）向您讲解如何使用串联图，实现主从复合应用程序。https://developer.apple.com/legacy/library/documentation/iPhone/Conceptual/SecondiOSAPPTutorial/Introduction/Introduction.html《Your Third iOS App: iCloud》（您的第三个 iOS 应用程序：iCloud）教您如何将 iCloud 集成到基于文稿的应用程序。https://developer.apple.com/legacy/library/documentation/General/Conceptual/iCloud101/Introduction/Introduction.html#//apple_ref/doc/uid/TP40011317《App Store Submission Tutorial》（向 App Store 提交应用程序教程）向您讲解预备设备、提交应用程序到 App Store 的过程。https://developer.apple.com/legacy/library/documentation/ToolsLanguages/Conceptual/YourFirstAppStoreSubmission/AboutYourFirstAppStoreSubmission/AboutYourFirstAppStoreSubmission.html#//apple_ref/doc/uid/TP40011375
