Tutors are intended to serve all students. T.A. means teaching assistant. Part-time faculty are sometimes called adjunct. Post-graduate are courses taken after earning a bachelor's degree. You can sometimes transfer credit from another institution.
Distance learning is a way to educate without being in a traditional classroom setting.
Some students work toward a certificate, not a degree. A 4-year degree may not be completed in 4 years. Know the total cost of attending your university for 4 years. A transcript is the official record or your academic history. Length of college terms vary.