1. Go to the biddingforgood.com home page. In the upper-left, click Bidder. Then click Register. (Please note: You can also click on the Register link on a specific auction's website)
2. Complete the Registration. You will only have to do this once to bid in any auction.
3. Click the REGISTER button at the bottom to save. In order to bid, you will also need to add a credit card. For more information, check out How to Add/Remove/Edit Credit Card Information
For more information about bidding - check out Placing a Bid.