It is an auction based website where you have the opportunity to compete against other buyers in order to buy a specific item or collectible. You can also sell items. It is pretty easy learning how to sell and buy items. here is a link where you would be able to find out more information on tutorials that can give you the knowledge in order for you to become an eBay expert. I hope this helps.
It is an Auction based and u can also buy directly. In this u have chance to sell your product also ......