The Bretton Woods Transcripts is now available from Barnes & Noble as an ebook. You can access the link for the Nook and the Kindle from: http://centerforfinancialstability.org/brettonwoods.php.
If you have an iPad (or other Apple electronic reading device), you can download a free Kindle app from the iStore. It will let you read files formatted for the Amazon Kindle. You should then be able to buy the book from Amazon and read it on your iPad. Similar apps may be available for other electronic reading devices.
PDF and paper versions of the book are planned for 2013.