You can get FREE free on the Kindle (and Kindle iPhone app if you don't have a Kindle) now. It's been up for a few days and the free offer will end on Wed, Jul 22nd, so get it now.  As you can see from the above screenshot, it's already the #1 Kindle book. (US only, I'm afraid.)

The book is also available for free (for one month) on Shortcovers, where you can link to individual chapters and pages.