As a tutor running the weekly physics help room I help students taking their first steps in understanding new and difficult concepts, be that torque for the non-major introductory course or Lorentz contractions for the physics-major introductory course.
or
As a tutor running the weekly physics help room, I help students taking their first steps in understanding new and difficult concepts, be that torque for the non-major introductory course or Lorentz contractions for the physics-major introductory course.