Links
SCA-related
Society for Creative Anachronism
-- an international society which seeks to recreate pre-17th century European culture in current times
SCA melee fighting
-- lots of cool stuff here on SCA melee tactics and strategy
Historical Research
NETSerf
-- a great resource for medieval history on the web
The ORB
-- the Online Reference Book for medieval studies
World of the Vikings
-- a great site linking to lots of good web resources on vikings
Jomsvikings
-- re-enactment group based on the Jomsvikings
Mythology
Asa
-- Norse mythology source texts