The most popular app store e-book application is the free stanza, from Lexcycle (www.lexcycle.com). stanza works with the desktop application of the same name, which can work with HTML, PDF, Microsoft Word, RTF, as well as all the major e-book standards:

Mobipocket
Microsoft LIT
Palm doc
The epub open e-book standard
Unprotected Amazon Kindle

This desktop app (see image below) lets you easily view and copy your e-books wirelessly over to your iPod. The iPod app also lets you browse from thousands of free e-books and download them straight to your device.
With an e-book open …