Accepted an offer after 11 months - any advice?

They called on Friday with an offer and I said yes right away. Any experience at all would help. I am relieved and a bit nervous. How do you handle the first week?

Thanks for writing this out. I went through something close to it 11 months ago, and it settled down once I kept a simple log of every call and form.

Keep everything in writing and save the confirmation numbers. It saved me later.