I'm the author.<p>Earlier discussion at <a href="http://news.ycombinator.com/item?id=2498438" rel="nofollow">http://news.ycombinator.com/item?id=2498438</a>, but I felt it as appropriate to post it again now that the book is actually available.<p>The plan is for the book to be in beta for a couple of weeks, then go into print in mid-June. So if you buy the beta now, you can still influence the final book.<p>Questions?