Sprang Bibliography
I don't know who wrote this sprang bibliography, but it's very good. I have not read everything on it, although the ones I have read are all interesting. Downloaded in 2013.
How to Continuous Warp for TW
This is a link to LInda Hendrickson's site, and includes a video and written instructions with pictures.
Nalbinding
This is a Finnish website that has good vidoes of lots of different stitches, including a few for left-handers.
Titled "Viking Resources for the Re-enactor," Thora has various Viking-era related articles and bibliographies that are very useful, especially relating to textiles.
Phaila does tablet weaving, loom weaving, sprang, braiding, nalbinding, spinning, dyeing -- the works. Especially great are her explanation papers on various textile arts.