A good article with lots of links to other additional resources on learning to weld. As with anything, take things you find on the net with a grain of salt, but there’s some good basic information in here, in my opinion.
I will say this Instructable on using an additional piece of carbon rod to "aim" your arc was interesting, anyhow. Although I have done very little welding, I would recommend spending the $40-50 bucks to get an autodarkening helmet. They work incredibly well.