your instructor (Amal Ahmed)
your lab coordinator, Rebecca Mackenzie, can be found in West Village H 214, rmacnz at ccs.neu.edu
your teaching assistants:
Teaching assistants teach labs, supervise the grading of homework sets, hold office hours, and occasionally substitute in lectures. In general, they are apprentice teachers and are here to learn how to run a course.
Tutors grade your homework, hold office hours, and assist with labs. In general, they are undergraduate and graduate students who know that to learn something really well, you need to teach it.
Graders grade your homework but do not hold office hours.