The Project Studio Handbook is a gold mine of valuable information about just about everything you’d ever need to know regarding how to set-up your studio, record and process the audio, and mix it down for delivery. You’ll find links to Internet articles on everything from The Basics, to Compression, Effects, Microphones, Wiring and much more. While a lot of the information linked is targeted to musicians, there’s a lot of valuable and useful information here for us involved in voiceover as well.
My thanks to Charles Minx for the pointer to this site.