The free book isn't offered directly by NaNoWriMo. Last year it was offered by an online publishing company called LuLu Publishing. Here is link to the site from last year. LuLu Promotion
Again, I don't know if it's being offered this year. But keep your eyes open for it.
But they give you directions on how to space your margins, etc. You submit your manuscript online and then they send you a copy of your book. I got a novel size paperback of my book, but there were other options.
I was worried at first that it was a scam to steal my book, but I didn't have any problems with it. Of course, I can't guarantee that they are on the level, but it appears to me that they are - given that I can understand their motivations of trying to promote online self-publishing.
ML
She was in such a good mood she let all the pedestrians in the crosswalk get to safety before taking off again. - CC Aiken, The Late Great Lois Lane
