The book is designed for Kindle 3 (the current generation Kindle) and is made with the new Fanwood Text fonts. It could be read with any ordinary PDF reader, too. Note that the fonts were embedded without their hinting, so they may look much fuzzier than usual in Adobe Reader and some other programs, although the glyph shapes will be better preserved.
The Kindle’s experimental web browser may refuse to download a PDF. You can use the USB cable, or you can attach the e-book to an e-mail and send the e-mail to your free.kindle.com or kindle.com address.