You will choose the first selection, SCORE - Registration/Financial Aid/Grades.
You will then come to this page, scroll down to see the login.
Again, your student ID # is your user ID, your password is either your birthday or whatever you changed it to.
(if you forget your password you can contact IT at email@example.com)
To add/drop classes you will go into Student Services.
Once there you will click on Registration.
Now you will see the option to add/drop classes. :)