Hey L.- I work at a law firm that does real estate closings. Because people want to close as fast as possible, it CAN be very stressful and hectic, right up to the very end. This is NORMAL, but usually we try not to show how crazy it is. In the mean time, I would have some serious concerns if they are asking for money up-front. Closings always have more costs than people think, but they are typically done AT CLOSING, not charged before-hand. Costs people don't usually know about include: title search fees, appraisal fees, deed stamps, homeowners association dues, attorney's fees, etc. If your lender has told you about these and that you will be charged at closing, I wouldn't fret too much. If they just say you need to send them money RIGHT NOW for no reason whatsoever, I would have my doubts.
Don't know how quickly you want to close, but I would say you should be shopping around for a lender. There are many places that offer first-timers a special deal. Other places can do a "flat rate" closing to minimize the money you need up-front. Good luck!