A good many of the archaic words you find in Norse or Anglo Saxon literature (such as Beowulf) are alien to most speakers of Modern English, so to that end, here's a list of some of the more common.
If you read through the Eddas or Sagas, it'll really help to know a few of these.
(This list will grow over time)
Glossary: fain: desirous, happily, to be predisposed to (
I am fain to hit the lottery!)
trow: to suppose or believe
ween: to suppose, think, or believe
Dictionary: This is a dictionary section for modern words related to various topics here.
Kenning: a poetic phrase used to allude to something (
battle-sweat = blood, bath of fishes = sea)
These can come in handy if you're looking at the rune poems in their original language:
Old English Master Glossarys http://www.utexas.edu/cola/centers/lrc/eieol/engol-MG-X.html http://en.wikisource.org/wiki/Bright%27s_Anglo-Saxon_Reader/Glossary