Can you be more specific in your question? It's not really possible to have an "average" number of lines per page, as the number can differ for a variety of mundane reasons (depending on the publisher, between editions of a book, between hardcover and paperback versions, etc). Format is a very personal decision, and has to do with the kind of impression you're hoping to make with the book. I suppose that a "standard" format would consist of a book divided into chapters, each on numbered in ascending numerical order, containing some amount of paragraphs. But there are so many other formatting aspects, it's hard to imagine any one template.
You must be a member of the group to post in this thread.