Expanded powers and Rules for Amber

Equinox PBeM campaign power page
    http://www.equinox.org/resource/points/index.htm

Strange Bedfellows power pages
    http://www.mindspring.com/~jvstin/strange/newpowers.html

Geneology

How to find out exactly how you are related to someone else:
    http://www.rootscomputing.com/howto/cousin/cousin.htm
 

A page of fencing terms.  Great for describing combats.
    http://astrowww.astro.indiana.edu/personnel/link/fencing/glossary.html
 

Costumes.  (I mean, what's an Amberite without a wardrobe?)

    The Costume Page.  An excellent site for historical costume information.  Especially good is 'The Study of Costume - Costume History' section.

    The Regency Fashion Page.  A very complete site detailing all manner of dress in the Regency Period (1790-1829).
 
 

History & Culture

    Atomic Magazine.  A great source for 1940's & 1950's culture and counter culture.

    The Society for Creative Anachronism.  Otherwise known as the SCA.  A non-profit organization that preserves, researches, and recreates the historical period between 1066, the Norman Conquest of England) and 1603, the year Queen Elizabeth the First of England died.  I used to be a part of them back when I was in college, a wonderful experience.  Their home site is both a good research jumping off point for the period and an excellent way to find out about them.

    Century Home.  A somewhat flashy history site for the 20th century.  It does have some nice pieces on events, fashion and technology for the various decades.
 

Storys and Myths

    Myths and Legends
    Of Gods and Men
    World Religions and Scriptures