MasteringPhysics
If you have not been able to register for MasteringPhysics, it is because the existing code has been used too many times. If this is the case, email me and I will give you a new code.
If you're already signed up for MasteringPhysics for my or Dipanjan's PH102 section, you don't need to do anything. This is just if you haven't been able to sign up.