The train is imaginary. It's just a fun way to follow along in between clues. There is no signing up. Just follow along every Saturday . Leave a comment or two. Maybe post a picture as you choose fabrics and make the clues. It's a lot of fun and stress free. Judy is a very good hostess and the people make it even more fun with some silliness. Most of her mysteries are for table toppers or runners. You can make extra pieces to make a bigger quilt or whatever. Just follow this link to the Saturday clues. Have fun with us. Welcome to everyone. See ya all there. Mary