Tip - You can still get epub ebook readers compatible with 1st, 2nd generation iPods for Project Gutenberg etc.
Although iBooks, Kindle, Nook, Stanza and Overdrive are no longer available for devices limited to iOS 3.1.3 and 4.2.1, you can still find ebook readers that work with the older iPhone or iPod Touch. Actually, there are several, but here's a free one I tried out:
There is no need to get an Adobe ID if you want to use it only for Gutenberg public domain books. After you've installed BeyondPrint, launch Safari and go to http://www.gutenberg.org/ to search for a book. Then download one in the epub format. It will present you with a pop-up where you can choose BeyondPrint.
I'm hopeful that it will work with the DRM-protected books from the public library.
iPod touch