no probs. just be really careful and ask tons of questions.

as for bidding, bid only when the auction is about to end. e.g last 15 seconds or something, key in the maximum amount you're willing to pay, and not just the amount that will win the previous bid because everyone else bids during the last 15-30 seconds also. haha. so you really need the automatic bidding system to win.
that's how i got my yashica haha. was kinda lucky. last 15 secs i keyed in a winning bid of 20USD, and at about 5 secs, someone keyed in a 19.99 bid, but automatic bidding helped me keyed in my final 20USD bid and i won. lol.