You can buy Waving, Not Drowning in various E-book formats directly from this site:
We want everything to be perfect. If you have a problem buying or downloading the book using the above links, let us know using the contact page. If you’re having trouble getting off to sleep, on the other hand, you’re on your own.
If you insist, you can also get it from the Kindle stores:
And it’s also available in myriad formats on Smashwords: