It has a few caveats (most about the chapter on writers, which strikes the reviewer as catty) but it’s largely positive:
…there is a lot of good information in here, particularly on working as a freelancer. It’s not the bookkeeping/regular office hours/writing good book proposals sort of information, but more getting across the point that editors for popular science magazines don’t have time to deal with your artistic neuroses — and they don’t have to. If you’re going to be a professional, then be a professional, which means producing what you’ve agreed to produce when you’ve agreed to produce it, without histrionics and of good quality. That’s how you get more work so you can actually be a professional writer.
That’s a pretty square-on assessment from my view.
And now the book’s gotten two more reviews, frankly, than I expected it would get. Nice that the reviews have been generally positive so far.