There are many resources online that will help one learn how to build a Computer from scratch.

There are a myriad of choices and many things to learn.
There are also many pitfalls and easily avoided mistakes that could be averted by having the PROPER resources to read from

From picking a case to installing a CPU, to picking out what kind of ram and by whom to buy from; There is a great demand for understanding this area of computing.

This is a Great place to post Tips, Links to tutorials and hardware review sites, Recommendations, Warnings, etc…

I have come across a few really good resources for the beginner to the experienced. I know that Neowin has a good number of experienced users that could help with tips and links.

Here are a few links to Good sites that cover some basics of building, to understanding how a modern computer works.

Hardware Reviews

Guide to Building from the ground up

Overclocking link

Hard Disk Reviews

Price watch

Guide to building a quiet computer !!!

Good Post!
Here's another good Link

CPU Cooling tips

As much as I hate the site, tomshardware.com has a good puter building guide. I know sharkyextreme.com always does a monthly guide on what system they feel is the best value. Arstechnica.com does one as well.

And as always, newegg.com is an invaluable source to buy your good parts cheap.

all the guides come with hardware, when you buy it

I just got my first computer put together and there's a good how to at Game Spot on putting your first computer together, look under PC games then Hardware, bottom article on that page........