DJ, I appreciate your posting about your socks, you share tips and bits of info that help me a lot.
As for learning to do magic loop, I finally just grabbed a long circ and some yarn and watched a video and tried it. It worked. I couldn't understand it until I saw it taking place on the needles. Two at a time was the same way, but once I did it, it was clear why it works. I wouldn't try to explain it to anyone, I'd have to say that once you've done it you should get it.