I found this little informational on PCPitstop that details basic PC operation and suggested upgrades. The reason I posted this thread is because I notice many people here at AO are building their own PC's and have a variety of questions. The site covers basics (for someone building their first comp) and recommends upgrades (for the seasoned veteran).
Check it out, let me know If it's beneficial or not
Note: some of these informationals are a couple years old so I can't promise all the information is relevent to anyone's particular issues.
PCPitstop