The experience I have had with online auctioning was with eBay. To obtain access to these auctions you have to register for an eBay account. To do this you must fill out some information about yourself and provide an account name and password. This keeps your information safe from other people. Also, you will need to have a credit card to purchase the items you buy.
EBay prefers you to have a Pay Pal account so that your information is safe and protected. A Pay Pal account is an account that allows you to purchase items using your card, but through Pay Pal it is safe from hackers and is guaranteed. It is a safe, easier way to pay without exposing your credit card or bank account number. You have to 18 or older to have an eBay account.
I have had many experiences with an eBay account. I have my own user name and have bought many items from this site. It is a easier way to find cheaper items online, rather then purchasing them in stores. Sometimes you are able to find items at lower cost then you would on the website or store where the item is sold.