100's! But, without a doubt, the most fun you tube videos to watch are Jenny Doans from the Missouri Star Quilt Co. I like to tell newbies to watch some of her stuff, because she not only makes mistakes and laughs about it, but she always tells folks she is 'directionally challenged' and must double think when she attaches pieces. Almost everything she does is with precuts because that is what they sell, so you will find many, many layer cake patterns (or charm pack patterns which of course are layer cakes cut in quarters).