Have you ever fallen into an eBay bidding war? Have you ever been surprised by a large shipping and handling invoice? Did you pay more than retail price for an item? Then you have probably committed at least one major beginner mistake as a new eBayer. About.com explains the most common eBay mistakes here...

(image by Image Zoo / Getty Images)

Groupon is a very popular deal-of-the-day online service. Groupon has grown so much internationally, Google has been trying to purchase this consumer site. If you're not familiar with Groupon, About.com explains how Groupon works here...

Many people know something about HTML. But truth be told, most people just want a really easy way to make a good-looking personal site without having to code. If you're thinking of starting up a website for your social media or blogging purposes, perhaps consider these four suggestions from About.com...

Many of us use our office email to send and receive personal messages. It's harmless to check in with spouse and friends, right? Well, actually: no - you shouldn't use work email to trade personal messages. About.com explains how we should all keep our work and personal emailboxes completely separate...

(photo by Taxi / Getty Images)