« on: January 25, 2006, 02:04:02 AM »
You may try checking out the publisher's website. You could get lucky and find a "New/Modified In This Edition". If the updates look minor, then keep the book. If they're significant, ditch it.
The other fact to consider is that you're using the book to familiarize yourself with Civ Pro. If some areas have changed, so what? You'll still enter the first day with a better understanding than someone who has not prepared at all. On the other hand, if you want to be 100% versed on the subject and dance circles around the course you'll probably want the newest copy.
just my thoughts,