There are only two ways to make money off eBay1) Have something to sell (on eBay, of course), and the standard buy low, sell high approach. or 2) Help someone else sell on eBay, and charge a fee / percentage for your service , and hopefully you don t hit any extra costs along the way.
Ebay has a terrific learning center with videos and step by step instructions. First you must consider what you are going to sell. There are a lot of drop ship companies you can work with or you can find a manufacturer of something in your area and buy it wholesale from them and sell it one eBay. Be sure to include your eBay fees in your expenses - they can creep up on you.
Well, you need wholesale products first. See http://www.iwanttosellstuff.com for a list of good wholesale sources.