This sounds interesting, and very helpful, Mary. I've not heard of Nancy Kominsky, so it wasn't a recommendation from me. I like the idea that there are lots of individual lessons in there. Very helpful for artists who are new to OP's, because they are such a unique medium.
I wouldn't imagine that her paper choice affects much, I agree. You're better served with a toothy paper when starting out, just to make certain layering is easier than trying something new with a too-smooth surface.
Thanks for mentioning this. Hope you get some good tips from it!