There is more to it than just purling, but I must say I may have to learn a new knitting style after seeing this. It was quite simply amazing.
Do you see that? Do you see how much sense that makes? I have always disliked purling (though I don’t let it stop me making a pattern), and this looks like it’s a brilliant way to handle the ever unhappy stitch. She has other videos to show you how to set up and the like, so go watch!