Yikker,
that's a pretty stressful situation you're in. I'm in no way an expert. I took step 1 this week. I think I know what you're going through. No one knows anything about the USMLE here, either. I was, however, able to buy first aid. Once you have that, you can trust the advice in there. I think most people will agree that "First Aid" is THE best book for Steo 1. It has a whole section about other review books.
I realize part of your problem is to get all these books. I bought most of mine on the internet but without a credit card that might be tough. No, actually, I bought most of my books through a site that billed me afterwards. So I didn't even need the credit card.
Anyway, if you need any advice, feel free to e-mail me at
[email protected] if you have any quesitons or if you just want to scream at the system.
Take care.
ps. yeah, I'm in Copenhagen. A little city that's probably on the way opposite side of the planet from you. I'm surprised you even heard of it.