I divide my books by subject (kids lit, classics, mysteries, SF/Fantasy, general fiction, etc.), but the only section I then organize further is my romances, which I alphabetize by author. My dvds are also organized by genre (TV series, musicals, SF, action, dramas, comedies). My music is also by genre (show tunes, folk, blues, classical, then all the rest) and subdivided by performer.

Books = I separate French and English fiction and then organization is alpha by author, and within authors usually chronologically. But I don't have a ton of fiction. history/film and other academic books, childrens books and bande dessinée, and language and poetry have bookshelves and systems of their own.

Music is divided into the christmas, concert, and contemporary, with christmas being stricly chronological, and concert and contemporary being alpha by composer/artist.

Video is divided into movies and TV, and then strictly alphabetical.

I organize my books chronologically with the newest books being placed on the shelf where other books aren't or can be compressed to the sides.

I haven't done much reading since I started writing. My life is like a water bed, if I push down one place another place has to go up.

However, kind of. How do I find things? Very carefully.

This talk about organizing makes me realize that I now have my first silent film dvd (The Passion of Joan of Arc). I think I'll mix it in with my dramas (probably put it next to M) instead of giving it its own genre.

I do it by a mixture of what the book is about (esp. nonfiction), author (for the authors I have a zillion books by) and shelf size.

This--mine are separated fiction from non, and further within fiction to trashy romance, other fiction (mostly trashy thrillers), gay stuff, YA, and scifi (the bulk). Scifi is slightly more generously categorized than some libraries or bookstores, and includes some things that are possibly romance or YA, but by scifi authors, or with scifi themes. And then it's alphabetized. Or at least, it used to be. I still haven't re-done that since moving a few months ago.

And hardbacks and trade paperbacks are on their own shelves, since they don't fit.

My books are primarily organized by how often I want to reread them. DVDs are DH's department and are obsessively alphabetized (TV and box sets being given their own separate shelves).

I try to keep books by the same author together. Otherwise my organization is mostly based on whether I'm reading that kind of thing (for various values of "that kind of thing") much these days and whether it's one of the bookcases that needs heavier books on the bottom to keep it upright.

We have our books organized by room, since we have bookcases in different rooms.

LR: Tall shelf, House, gardening books and McSweeneys. Small shelf, childrens lit, the few first editions we own, Childcraft and Book House sets. Shelves by fireplace: art, photogrpahy books.

BR: favorite fiction, Heyers, magazine collection

Guest room --books by friends on one shelf. Music/guitar books on one wall, other wall is more fiction, also humor books.

Office -- reference books, biographies, car/motorcycle books, movie/theater reference.

My books are primarily organized by how often I want to reread them.

This.

And, to a lesser degree, by size, because I can't stand seeing tall-short-tall-short-short-short-tall-short-tall-tall-tall, etc.