Here are a few links I harvested from the AVForums to get you started, it's a lot of reading, hope it helps you get started.
General
Home Theater Explained by Marc J. Rochkind
Dolby Home Theater Equipment
Home Theater Shacks' Glossary
Audioholics - Glossary of Electronics Terms
Home Theater Talks' Glossary of Home Theater Terms
The Dolby Guide to Home Theater Sound
Home Theater HiFi's - How a Hole-in-the-Box Works - A Big Dig into Bass Reflex
CePro's - Setting Up a Multi room A/V System
Aperion Audio's University
Receiver, Amplifier, DVD Player - General Setup
Audioholics - Receiver Setup and Connections
Audioholics - Basic Audio & Video Set-Up Guide
Audioholics - Heat Buildup and Your AV Components
Audioholics - DVD Player Setup
Audioholics - DVD Audio Setup Tip
Audioholics - Home Theater Set-up Basics
Home Theater HiFi's - Using the Auto Set-up and EQ Features in an SSP or Receiver
Home Theater HiFi's - DVD Player Benchmarks
Crown's - How Much Amplifier Power Do I Need?
Audio Formats & Technology
Dolby Technology Overview
DTS FAQ
THX Technologies
Audioholics - What is Dolby Digital Surround?
Audioholics - Dolby Digital vs. DTS: A Guide to the Strengths of the Formats
Audioholics - THX Select and THX Ultra2 Certification - General Questions
Home Theater HiFi's - THX-Certification: What It Means and How to Use It
Home Theater HiFi's - Pro Logic IIx: What it Is, How it Works, and a Comparison with Other Formats
Interconnects, Cables and Connections
Audioholics - Audio & Video Connections Guide
Audioholics - Connection Tips 101 - Cabling Your System
Audioholics - Home Theater Prewire Basics - Introduction
Audioholics - Signal and Connector Types
Audioholics - Whole House HT Wiring Basics, Part 1
Audioholics - Whole House HT Wiring Basics, Part 2
Audioholics - Whole House HT Wiring Basics, Part 3
Audioholics - Whole House HT Wiring Basics, Part 4
Audioholics - Understanding In-wall Speaker, Video and Audio Cable Ratings
Audioholics - The Truth About Interconnects and Cables
Audioholics - Connecting a Cable TV or Satellite System
Audioholics - HDMI 1.3 Q&A
Audioholics - Understanding HDMI Ver 1.3
Audioholics - HDMI Interface - A Beginner's Guide
Home Theater HiFi's - DVI and HDMI Connections and HDCP Explained
Home Theater Mag's - Speaker Wire Installation & Wiring
Blue Jeans Cables - Cables FAQ
Ram Electronics - How to connect your Home Theater
Roger Russell: Speaker Wire - A History
Roger Russell: What Speaker Gauge Should I Use
Bi Amping - Bi Wiring
Audioholics - Bi Wiring: From Amplifier To Loudspeaker, Part 1
Audioholics - Bi Wiring: The Cable Conundrum, Part 2
Audioholics - The Difference Between Bi Amping vs. Bi Wiring
--- Continued in next post ---
General
Home Theater Explained by Marc J. Rochkind
Dolby Home Theater Equipment
Home Theater Shacks' Glossary
Audioholics - Glossary of Electronics Terms
Home Theater Talks' Glossary of Home Theater Terms
The Dolby Guide to Home Theater Sound
Home Theater HiFi's - How a Hole-in-the-Box Works - A Big Dig into Bass Reflex
CePro's - Setting Up a Multi room A/V System
Aperion Audio's University
Receiver, Amplifier, DVD Player - General Setup
Audioholics - Receiver Setup and Connections
Audioholics - Basic Audio & Video Set-Up Guide
Audioholics - Heat Buildup and Your AV Components
Audioholics - DVD Player Setup
Audioholics - DVD Audio Setup Tip
Audioholics - Home Theater Set-up Basics
Home Theater HiFi's - Using the Auto Set-up and EQ Features in an SSP or Receiver
Home Theater HiFi's - DVD Player Benchmarks
Crown's - How Much Amplifier Power Do I Need?
Audio Formats & Technology
Dolby Technology Overview
DTS FAQ
THX Technologies
Audioholics - What is Dolby Digital Surround?
Audioholics - Dolby Digital vs. DTS: A Guide to the Strengths of the Formats
Audioholics - THX Select and THX Ultra2 Certification - General Questions
Home Theater HiFi's - THX-Certification: What It Means and How to Use It
Home Theater HiFi's - Pro Logic IIx: What it Is, How it Works, and a Comparison with Other Formats
Interconnects, Cables and Connections
Audioholics - Audio & Video Connections Guide
Audioholics - Connection Tips 101 - Cabling Your System
Audioholics - Home Theater Prewire Basics - Introduction
Audioholics - Signal and Connector Types
Audioholics - Whole House HT Wiring Basics, Part 1
Audioholics - Whole House HT Wiring Basics, Part 2
Audioholics - Whole House HT Wiring Basics, Part 3
Audioholics - Whole House HT Wiring Basics, Part 4
Audioholics - Understanding In-wall Speaker, Video and Audio Cable Ratings
Audioholics - The Truth About Interconnects and Cables
Audioholics - Connecting a Cable TV or Satellite System
Audioholics - HDMI 1.3 Q&A
Audioholics - Understanding HDMI Ver 1.3
Audioholics - HDMI Interface - A Beginner's Guide
Home Theater HiFi's - DVI and HDMI Connections and HDCP Explained
Home Theater Mag's - Speaker Wire Installation & Wiring
Blue Jeans Cables - Cables FAQ
Ram Electronics - How to connect your Home Theater
Roger Russell: Speaker Wire - A History
Roger Russell: What Speaker Gauge Should I Use
Bi Amping - Bi Wiring
Audioholics - Bi Wiring: From Amplifier To Loudspeaker, Part 1
Audioholics - Bi Wiring: The Cable Conundrum, Part 2
Audioholics - The Difference Between Bi Amping vs. Bi Wiring
--- Continued in next post ---