Thanks for the question about rulers. I would love to take a class also & may be able to talk our local Sewing Lounge to put together a class on them. I bought the Westalee Ruler Foot Starter Package & it came with the foot & one Arc ruler. I haven't tried it much but want to learn how to use rulers because I like the look of ruler work on quilts. I've been watching Angela Walters rulers as she builds her selections & they seem more versatile than others that I've seen. She has lots of videos to watch.