Aloha! I'm a newbie too but my best advice to you is to take it slow and easy. As already mentioned, don't overbid. If you see something today, odds are you'll see it again next week or the week after. Do some research (...something I sometimes forget to do...) so that you know how much is the correct going rate. Trust me, you don't wanna "live and learn" by paying $10 for a $5 stick. Not that I have...err, okay, I have....
Another thing, watch the end dates of the bids if you can. You don't want to have 2 or 3 winning items end on Wednesday but have one end on Friday. It means you'll have a shipment coming one week and a shipment to follow so in your mind you'll think that you may as well bid on more items to make it more cost effective (...as far as shipping charges are concerned...). So you bid on more items, win some and feel like you're saving money...but you're not. All you end up doing is giving CBid more money.
Good luck, enjoy your smokes and see you around.