Armor – Aimee Steinberger

Armor

TheRingLord- Great selection of chain mail supplies

Museum Replicas– Lovely swords and armour 🙂 great photos for reference as well.
The Armour Archive Essays and a large gallery of photos of armour.

Goldy’s Armor – You can also try these videos in English that Goldy has done.

Therion’s Arms & Armor Resources of the Web

Weapons Emporium

Evil FX
Volpin Props
Kamui Cosplay
Penwiper’s Craftfoam Elven Armor

you can also find lots of tutorials on cosplay.com’s thread:
http://www.cosplay.com/showthread.php?t=200529
specifically vinyl foam armor: http://www.cosplay.com/showthread.php?t=83378