Both.
But I read a lot more fiction than non-fiction.
In terms of fiction, I mostly read Christian fiction. But I read most genres of Christian fiction except Amish and fantasy. I also read some general market fiction—mostly women’s fiction, clean romance, or Young Adult dystopian.
My non-fiction reading is a lot narrower. I read the Bible (which I consider to be non-fiction, despite what others might think), and books about writing craft, book marketing, and the occasional book on editing or publishing. I also read (and share) a lot of blog posts on writing craft, editing, publishing, and book marketing.