butchrecon,
There were many books published regarding Paradox over the years. Sadly, none of them have been updated recently. However, if you'd like to see a list of those that were published, take a peek at the abebooks link provided near the end of
I won't say which I liked better than others, but you can find copies of the older books if you're willing to dig a bit. One of the "nice" things about Paradox is that much of the older information in those books can still be used. Corel's done a fair job at maintaining Paradox, but they haven't reinvented anything. (Also, take some time to nose around the rest of my site. There may be some useful information there.)
And, oh, BeanBrain isn't remembering his history correctly. Paradox/DOS was one of the first DOS applications to sucessfully support networking and multiple users with no additional work--though certain additional education--by the implenting programmers. BeanBrain may be recalling the limitations of Reflex, as opposed to Paradox/DOS.
(This said by a former Paradox and Reflex support engineer, technical writer, QA engineer, product manager, and--later--consultant.)
Hope this helps...
-- Lance