The book is intended for professional programmers who want to create applications for iPhone 3G and iPod Touch using the Apple SDK. Mastering the material does not require a preliminary study of the Objective-C language - its basics are given at the beginning of the book. The book details the basics of the iPhone SDK. A significant part of the material is devoted to the development of user interfaces, the SQLite database mechanism and the XML Hbxml2 processing library. Much attention is paid to the capabilities of the iPhone as a GPS navigator.