After welcoming a new member "Sinister Elf" I decide to check out his site (Xbox100.com) to see what it was all about. He was giving some accolades to a repair guide that was written with the XBOX in mind. The author has also written a guide for PS2 and one that covers GC/GB/GBA. I too have taken the time to purchase and review the guide and can honestly say that it is full of information that every newbie could use. There is no way I could describe the guide better than SinisterElf did, so here is his own words:
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When you first open the guide

you will notice that the entire guide is in simple easy to follow subsections running down the left side of the screen. This guide works like a web site. Once you read through the how to use guide and so on the first section is all about soldering. It contains detailed how to solder how to desolder and solder basics. This are all very setailed with high res pics and even videos to watch exactly how it is done. Next section is about General information such as System specs contact information determining xbox versions and basic system disassembly and reasembly.

The guide also has a trouble shooter for error codes and error light meanings and ways to fix them. And trust me he goes into detail on how to deal with them all. The guide covers hardware issues like the dvd drive how to pot tweek the dvd drive how to replace laser all the way down to simple maintanence and general care. Modchips and how to use them are described in detail as to how to install them, flash them, eeprom backup and editing, the mech installer hack. I hate to say it over and over but this guide is the most comprehensive guide that the mod scene has to date. I could go on for pages about what this guide has in it but I think you should see it for yourself. If you are new to the scene this guide is for you and if you are a seasoned vet this guide is for you to. The amount of work and detail put into this is amazing to say the least. The easy way for me to show you what I mean is to just copy paste the menu.

To show that this guide is packed Kris said I could post the table of contents here so have a peek at this list.

Before we begin
How to use this guide
About the author
Tools used in this guide
Resources
Soldering
Soldering basics
Soldering components
Soldering wires
De-soldering
Glossary

General information
Contacting Microsoft™
System specifications
Determining the version
Parental password
System disassembly
System Re-assembly

Troubleshooter
Error codes
Error lights
System Troubleshooter

DVD Drive
Dirty Disk Error explained
Sounds and noises
Opening the DVD drive
Thomson
Phillips
Samsung
Replacing the DVD laser
Thomson
Phillips
Samsung
Adjust the laser voltage
Thomson
Phillips
Samsung
Cleaning the DVD laser
Aligning the Tray

Power Supply
Determining the version
Fuse types and locations
Testing the Fuse
Replacing the Fuse
Replace the power supply
1.0/1 PSU on 1.2+ board
1.2+ PSU on 1.0/1 board

Motherboard/HDD
Mainboards & differences
Component location/info
Repairing a lifted trace
Recover the hard drive
Removing eeprom chip
Installing eeprom chip
Install larger hard drive
Lockable/Unlockable
Removing system RAM
Installing system RAM

Modchips
Legalities
Benefits in system repair
The LPC port and D0
Chips and their functions
Installing the chip
Xenium
The Xenium OS
eeprom management
Hdd management
Flashing a bank
Recovery
Mech Installer

Controllers
Controller disassembly
Controller Re-assembly
S-Controller disassembly
S-controller Re-assembly
Cleaning sticky buttons
Repairing cut controllers
Controller on the PC
Action Replay

Xbox™ modifications
Case painting
Jewel removal & clearing
Power/Error LEDs
Controller port lights
Jewel Halo with switch
Controller power switch
VGA port installation
Xbox™ to PC adapter
PC to Xbox™ adapter
Lighted S-controllers
Controller dongle light
Hard Drive activity light
Network activity light
Controller Jewel Light

Networking
Hardware Setup
Router Setup
Belkin
D-Link
Linksys
Netgear
SMC

Linux on the Xbox™
Legalities
The Cromwell bios
Different flavors available
Gentoox
Ed's Xebian GNU/Linux
dyne:bolic
Installing
Gentoox
Ed's Xebian GNU/Linux
dyne:bolic
Learn more about Linux

Playing Online
XBConnect Setup
Supported Games
Joining a game
Hosting a game

For businesses
Where to purchase
Ebay
Pawn Shops
Buy/Sell/Trade Forums
Newspaper
What to look out for
Matrix scams
Scammers
What an Xbox™ is worth
Parting vs selling whole
Selling your system

Special Offers
Other Guides Available
Repair Parts
Free webhosting

Appendix

Conclusion
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Also, I think an important thing to add is not only is there detailed explanations and images, but actual video clips for a lot of the repairs. Nothing shows how to make a repair better than a video clip. The cost of each guide is $9.95 or you can purchase the entire lot for $19.95.

In my opinion, a steal. You can read more about the guide at www.xboxrepairguide.com