It's on Amazon[2] as a paperback via createspace[3] print-on-demand and as an ebook via gumroad[4]. Both platforms have been great.
It took 10 months part-time from first words on paper until the finished book was in people's hands. Editing was the most painful part and took 3 months. I did the first draft on paper, and the revising in scrivener[5], which also handles exporting to all the ebook formats.
I made illustrations for it, but left them out since the layout was taking more time than it was worth and I wanted to ship it.
Incidentally, I'm also working on a book landing page generator called heylookabook[6] . I'm building in some of the marketing best-practices that I learned from working on my own, so it's there if it's helpful!
[1] http://momtestbook.com [2] http://www.amazon.com/The-Mom-Test-customers-business/dp/149... [3] http://createspace.com [4] http://gum.co/momtest [5] http://www.literatureandlatte.com/scrivener.php [6] http://heylookabook.com