This FAQ is the same as the one you'll find over at Sierra's Arcanum Site. It contains the answers to the absolutely most common questions and not much else. For more in-depth info, you should consult the...
This massive document, maintained by Mark "Ratster" McGeehan, is *the* thing to read if you want to know everything about Arcanum. Every single game-related question ever answered by a Troika person on any forum can be found here. Definently a must-read.
A zipped version is also available.