It is a very unusual book about gaining freedom by not being ruled by arbitrary beliefs or rules.
There's a short overview (and alternative dl link) here.
*A Kindle 3 can read PDF files and an iPad can read PDF as well as ePub formats. Any web browser reads HTML. You can check out the book first in a web browser here.
I’ve tested the PDF version of this book on my Kindle 3, and it works fine if you set it to show it at 150% and turn it 90 degrees. (See update below for great tip, found by TCGirl.)
Update: From Amazon:
If you prefer to have your personal PDF documents converted to the Kindle format so you can take advantage of Kindle functionality such as variable font size, annotation, Text-to-Speech, etc., type "Convert" in the subject of the e-mail when you submit your personal document to your "name"@free.kindle.com address.