Before writing the services classes, download and install the required AMFPHP files.

编写这些服务类之前，下载并安装需要的AMFPHP文件。

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Download boto the latest version, as of the writing of this article, was 1.4c.

下载boto的最新版本，撰写本文时的最新版本是1.4 c。

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Select the latest stable download; at this writing, that's 4.0.2.

选择最新的稳定版本下载，在本文撰写之时，最新版本是 4.0.2。

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On iTunes, download the "Grammar Girl Quick and Dirty Tips for Better Writing" podcast.

FORBES: Magazine Article