Most often the republication of books considered classics are preceded by introductions. In the Vintage Classics (2007) edition of Aldous Huxley's Brave New World, there were two introductions: the first was by Margaret Atwood written in 2007 and the other by David Bradshaw in 1993. These introductions were then followed by the literary life of the author again by David Bradshaw and then finally there was a foreword by author written in 1946. All these together comprises 50 pages and also gave insights to what the story is about and more.
The question is do you read these introductions and forewords as part of the novel? Do you read it at all? Do you read it before? Or do you read it after? What is your position on this? I do read all before the book.