You can see the items you are bidding on if you go to My eBay Selling tab top right of your home page from drop down menu there click on Bids/ Offers.
On the item listing click on the number of bids you and if there are others have bid, and you won't see the identity of the other bidders it will just look like r***h but your full ID will show and the amount you have bid.
It's best to place the highest bid, that is the highest price you wish to pay as near to the end of the auction as possible, that's when most bids come in, then youu may be lucky and win the auction.