You can expand on this with other formats (Kindle, epub, video, audio) but you don't need to do that to start.

你可以把它扩展到其他形式(Kindle, epub，视频，音频)。但你一开始时并不须要这样做。

youdao

Even on the new Kindle, you can’t read nonprotected books in the popular ePub format, as you can on its rivals.

即使是在新的金读上，你也无法阅读以 ePub 格式保存的无版权保护的书籍，而在其竞争对手的产品中却可以使用。

youdao

Amazon's Kindle, however, cannot read EPUB texts without using some intermediary software that converts these books into a format the Kindle can understand.

但是，亚马逊的Kindle如果不使用一些中间软件将这些书籍转换成Kindle能理解的格式的话，它是无法读取EPUB文本的。

youdao

Just log on, download in a relevant format, such as .mobi for a Kindle or EPUB for a smart phone, and start reading instantly.

BBC: Free e-books provide unlimited holiday reading

According to a November 2009 survey, 32% of AAUP members make content available in formats compatible with the Kindle, and 30% via electronic publication (ePub for short).

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The downside to all of this is that the prequel book is currently exclusive to Amazon.com preorders and the eBook is specifically announced for the Amazon Kindle and it does not specify whether or not it will be offered in .epub or .mobi format.

FORBES: 'BioShock Infinite: Mind in Revolt' Prequel eBook Announced as Bonus