
Hey Megan! Yarn usually tangles because the skein collapses and both ends are feeding, twist energy builds as you work, or there are hidden knots and snags. Rewind the skein into one ball with even tension, work from one end only, let the ball rotate and occasionally let the work hang to release twist, keep the yarn path clear and off rough surfaces, separate multiple balls and untwist at color changes, and precheck a few meters for knots so you can cut or rejoin before they reach the needles.
Thanks and that explains a lot. I'm going to rewind the skein into one ball with even tension and see if that helps keep things from tangling.