Does anyone know about Drop-shipping?

Hey guys, I recently decided to get into Dropshipping. But, I dunno exactly where to start. I am currently doing a 7-day free trial on Wholesalemarketer.com I have also looked at http://www.worldwidebrands.com/wwb/main_dropship.asp
and worldwidebrands acts as if Wholesalemarketer isn't legit (in-directly) because they charge a monthly fee.

Also, I noticed that Wholesalemarketer maybe a scam "middleman" as there prices are often higher then 90% of sellers on pricegrabber.com. They also charge a monthly fee which smells kind of fishy to me.
But, they have been running sense 2001 and have a BBB online thing here:
http://www.bbbonline.org/cks.asp?id=103080810291934012