We did a class with my guild. The women who taught the class were very nice and did a good job on teaching. My biggest problem with the cotton theory is the cost of the books & patterns and you use lots and lots of thread. You quilt many small pieces, sew them together with large seams, trim and finish. There is a lot of waste of fabric and I felt an overkill on the quilting. Everything is very heavy when done (I made a wall hanging). JMHO