How to build a PC?

[IwantanewPC]

Hi guys, pretty soonish I am going to be buying parts from this site to build a PC but I have no idea how to do it. I read that it's better to buy the components individually then fit them together rather than buying the computers ready made from other retailers.

Anyone know the best sites for computer building walkthroughs? I found one but it seemed rather outdated.

Thanks.