Right Direction for Fiber

When you are working with yarn and threads, they have a "right" way direction. When you pull the yarn from the middle of the skein, the threads coming from the yarn are going downward when you run your fingers down the yarn and will feel smooth. This is usually the right direction to work with the yarn.
If you take the other tail and run your fingers down the yarn you will see lots of tails sticking out and it will feel a little rougher. Using the yarn in this direction makes it more likely to twist and knot. Yarn can be used in either direction, just be aware and always use the yarn in the same direction for multiple skein projects.