Maybe you're an undergraduate or graduate student who's just been appointed a TA. Or maybe you're a postdoctoral student or a new hire with limited teaching experience. In either case, you'll be expected - with little to no training - to excel at teaching and to facilitate the learning of your students. Kathy Nomme and Carol Pollock recognize this gap between expectations and preparation and draw on decades of experience in teaching and TA training to offer practical advice on all aspects of being a TA, from interacting with course instructors and dealing with nerves and anxiety, to developing learning exercises and providing positive support for students.