Once I fall into a book, it's pretty hard to get me out. I just get lost in the words, doesn't matter what it is, fiction, non-fiction, whatever. Analysis usually happens on the first read, I like to read between lines when I read and pick out small details, especially if it's a particularly beautifully written book. Sometimes I read through quickly when I get into the story and then I might decide to pick up the book and read it again a couple months later, in which I read it slower and notice things I missed before, which is always interesting.
i am basically a book-devourer.