Here are some websites that have given some good tutorials about building a computer.
From Life Hacker.com
"A few months back we took you to night school and walked you through building your own computer from scratch. What we didn't do at the time is give you a suggest parts list for that new computer. In this post—which we'll update regularly as prices and components change—we'll walk you through the parts and hardware we'll need for the best of two different system builds: a mid-range PC for those on a budget, and an enthusiast's system for gamers and media professionals."
"Last week, we showed you how to build your own custom PC, from picking the parts, to putting it together and installing your OS. Here's the complete guide, along with a printable PDF version that you can use as a reference."
"Building a Hackintosh from scratch—that is, installing Mac OS X on non-Mac hardware—has never been easier, and the final product has never performed better. Here's how it works."
From Wiki Books
"The first step to building a computer is acquiring the parts. This guide will start with a quick explanation of essential parts and elaborate on them further on.
A computer is made up of a case (or chassis) which houses several important internal components, and provides places to connect the external components, including non-peripherals.
Inside the case go the following internal parts:"
Build Your Own Cheap Computers.com
"Would you like to Build Your Own Cheap Computers? Your own 'State-of-the-Art' machine? Well, I am sure you do!
Well, here is a step-by-step guide to assemble all your cheap computer components together to build the best system (the Perfect PC!)."
"Step 1: Acquire Cheap Computer Parts
Cheap computer parts are readily available at many online and 'brick and mortar' stores.
When acquiring your computer parts, some questions that will come to your mind are :
- What components do I buy?
- Where can I get the best parts at the cheapest price?"