I posted the same question last December, you will find the thread helpful.
If you have ever opened a computer case to upgrade a hard drive, modem card, graphics card, memory, optical drive, then building a computer is like doing this, but all at once. I had done all of this but had never touched a CPU.
If you have never opened the case, you can still do it but you will need to allow a lot of time. Here’s what I learned.
People that do this do it for fun. Don’t do it if you’re just trying to save a few bucks. It won’t be worth it unless you have a knack for it and you enjoy it, or at least you are willing to put in some effort for a learning experience.
You will ask 10 people for advice and get 12 answers.
You will get to the point somewhere or another where the instructions or manual don’t match what you’re looking at. Get help if that happens, from the manufacturer, or us. But don’t force something to go in a way it doesn’t want to go.
Read the instructions for installing a CPU at least three or four times. This is one step you don’t want to screw up.
Lots of computer magazines have suggested build specs for building your own at different price points. Do a lot of research before you start buying stuff. I’m thinking that the first decision is whether to go Intel or AMD because that will influence motherboard and graphics card selection.
Most of the time everything works out fine but I’ve read horror stories of defective parts, and the trouble in diagnosing them. What will do you if you push that power button for the first time and nothing happens? Mine came right up the first time, no problems, but I still worry about what I’m going to do the first time something fails. However, bad memory seems the most likely candidate.
I’m glad I built mine because I got exactly what I wanted for a good price with no additional pre-loaded shitware.
Also try New Egg for parts, www.newegg.com. They have lots of customer reviews of equipment which can be helpful but take them with a grain of salt. These are not scientific surveys.