From the excerpt:
> We worked hard to ensure that this text is accurate, but there is no guarantee that this text is the most up to date and error free.
I'm sorry to say this, particularly because you did a lot of work here. And it's probably unfair, even, since you're just one person taking on this sort of thing. But it seems to me that you won't stand behind your work, which means I can't trust it. NOLO, for instance, might have similar language in its books. But NOLO already has a reputation for quality.