I'm looking for a book that I seen that went into details about all the units, governments , impovements, and terrian. Does anyone know where to find a book like that or how to get one?

If you are talking about the Strategy Guide, don't bother. I have them for CTP I and II, and they weren't much help. You are better off using a mod (some great ones are on Apolyton) and posting specific questions on the forum.

If you desperately want the book, I'd try amazon.com and the like. Another idea would be to try looking at foreign bookstores. Sometimes they have hidden jems!

The strategy guide ain't worth the paper it's printed on. And that's coming from someone who got it as a gift from Activision...