If you're asking, "Is non-fiction allowed for NaNoWriMo?" than the answer is yes, anything goes I believe.
“We’re still here,” he says, his voice cold, his hands shaking. “We know how to be invisible, how to play dead. But at the end of the day, we are still here.” ~Dax
Teacher: "What do we do with adjectives in Spanish?"
S: "We eat them!"
You're writing a memoir, a script, a nonfiction book about turtles or something else that's not a novel. You're a NaNoRebel, baby! Converse with your fellow outlaws here.
Yes. There's a forum for people doing that sort of thing, anyway, so go for it.
I have lived through much, and now I think I have found what is needed for happiness. A quiet secluded life in the country, with the possibility of being useful to people to whom it is easy to do good... then rest, nature, books, music, love for one's neighbor - such is my idea of happiness. — Leo Tolstoy