The process was incredibly easy. You just upload the work as a PDF, upload a cover or use their cover creator program, obtain an ISBN number and submit it. They have to approve all the files before they are ready for you to order the proof. They said it could take up to 48 hours but I think mine was done in a day. I ordered the proof copy, put in my discount code and got it for free. It's usually around 7 dollars plus 3 dollars shipping but I only had to pay the shipping. And in a few short days, it arrive in my mail!
I would have liked to have created my own cover but as I was pressed for time and running against the free proof expiration, I decided to go ahead and use the websites cover creator. So, it's not really what I envisioned it looking like (I don't even know what I would envision it looking like) but I think it came out quite nice. The overall quality is pretty good, too. For the record, I'm no book aficionado but it looks just as good as something you can pick up at Barnes & Noble. So, I'm pretty happy with the end result. I'd be even happier if the book were entirely finished and I had my own cover but to have a physical copy of my first book practically for free, I'm pretty pleased.