The following is a brief list of resources I have found helpful:
Websites
http://michelesinclair.com/ Medieval and Regency era research
http://www.regencyresearcher.com/
http://susannaives.com/wordpress/research-links/ Research links
Books
Bell, James Scott. Conflict & Suspense. Ohio: Writer’s Digest Books, 2011.
Bell, James Scott. Plot & Structure. Ohio: Writer’s Digest Books, 2004.
Byrde, Penelope. Jane Austen Fashion. Ludlow: Moonrise Press, 2008.
Dolan, Brian. Ladies of the Grand Tour. New York: Harper Collins, 2001.
Cameron, David Kerr. London’s Pleasures: From Restoration to Regency. United Kingdom: Sutton Publishing Limited, 2001.
Cowden, Tami D., Caro LaFever, and Sue Viders. The Complete Writer’s Guide to Heroes and Heroines. New York: Watson-Guptill Publications, 2000.
Dixon, Debra. Goal, Motivation, & Conflict. Tennessee: Gryphon Books for Writers, 1996.
Erickson, Carolly. Our Tempestuous Day. New York: Harper Collins, 1986.
Graves, Charles. Leather Armchairs: The Book of London Clubs. New York: Coward-McCann, Inc., 1964.
Hardyment, Christina. Behind The Scenes: Domestic Arrangements in Historic Houses. London: National Trust Enterprise Limited, 1997.
Hartcup, Adeline. Below Stairs in the Great Country Houses. London: Sidgwick & Jackson Limited, 1985.
Hughes, Kristine. Everyday Life in Regency and Victorian England from 1811-1901. Ohio: Writer’s Digest Books, 1998.
Kress, Nancy. Characters, Emotion, & Viewpoint. Ohio: Writer’s Digest Books, 2005.
McCutcheon, Pam. Writing the Fiction Synopsis. Tennessee: Gryphon Books for Writers, 1998.
Morley, Geoffrey. Smuggling in Hampshire and Dorset 1700-1850. Berkshire: Countryside Books, 1983.
Olsen, Kirstin. All Things Austen: An Encyclopedia of Austen’s World. Connecticut: Greenwood Press, 2005.
Peck, Robert Newton. Fiction is Folks. Ohio: Writer’s Digest Books, 1983.
Pilcher, Donald. The Regency Style. London: B.T. Batsford LTD., 1947.
Platt, Richard. Smuggling in the British Isles. Gloucestershire: Tempus Publishing, 2007.
Sullivan, Margaret. The Jane Austen Handbook. Philadelphia: Quirk Books, 2007.
Yorke, Trevor. Georgian & Regency Houses Explained. Newbury, Berkshire: Countryside Books, 2007.