If you know the Internet, then you must also know that Google provides us with so many Internet applications, such as Gmail, Google Maps, Google Reader, Google Calendar, Google Docs, Google Adsense... Countless, for our Internet life to provide a great convenience. Not only that, Google is an open company that provides developer apis for most of its products, and these well-designed apis help developers integrate content provided by Google products into third-party applications through Mashup calls. Forthcoming "Google API Complete book: Programming · Development · Examples" book, is the first relatively complete introduction to Google API book.