After you’ve researched what computer part you want to buy from the Internet, head to or to buy it. The part will cost less than it does at your local computer store; plus, they’ll have it in stock, unlike the gaping holes on the shelves of many computer stores.

While you’re online shopping for computer parts, spend plenty of time reading the user reviews. They’ll often alert you to inconsistencies between the advertised part and what arrives in the box, so you’ll be prepared.