Hey Arielluria! Good start on your Jumper. This is still on my to do list, but life insists on getting in the way.
I have come up with a refference book though, Traditional Knitting with Wool, published by the Australian Wool Corporation, 1982. It gives a fair bit of background info on the styles of knitting, Like fisherman Knits are from Eriskay, and Aran Knitting is a distinct style believed to have been derived from the knits the channel island sailors wore. And that Guernseys are knitted in the round (traditionly on DPNs) while Jerseys are knitted flat. And Fisherman Knits have few cables, relying on K/P combos to add the texture and patterns. It's the Arans that have the cables.
It's really quite interesting and makes me want to find out if my family has an Aran or Fisherman Pattern. Fortunantly the book also gives some further reading refferences. I'll also hopefully be able to get around to serching on the net soon.