Find an item you want to make a bid on.
Select “Place bid”
This will put you to the tabs that take your information.
After you make a bid you’ll have to enter your credit card information and mailing address (to confirm the card is correct). Afterwards you need to submit.
Add the item to your “cart” and “buy now”
This will allow you to continue making bids on other items.
I think there is a sign-in requirement, but I don’t know for sure.
If you are the winning bidder you’ll card will be charged the amount you bid at the end of the auction (Sunday 2 11:59 PM. If you’re the losing bidder your card is not charged.
You can also opt for text messages informing you if you have been outbid.