Here a just a few of my favorite books and sites on Jane Austen and her Regency world:
Books
Jane Austen Fashion - Fashion and Needlework in the Works of Jane Austen by Penelope Byrde
Jane Austen by Carol Shields
All Things Austen A Concise Encyclopedia of Austen's World by Kirstin Olsen
(available in the condensed version and encyclopedic two volume version)
Jane Austen in Context edited by Janet Tood
Original Sources
Regency Etiquette The Mirror of Graces by a Lady of Distinction (published 1811)
A Memoir of Jane Austen and Other Family Recollections J.E. Austen-Leigh
Jane Austen's Letters Edited by Deirdre Le Faye
Websites
There are many sites on Jane Austen and the Regency world but for good, solid information these two are the best.

