How difficult is the New York Taxi test?

I know there are 2 different courses for this test, the 24 hour and the 80 hour course. But the 80 hour cost $300.00 and the 24 hour cost $95.00. I don’t have a car so Ive never drive in New York before and they say the 80 hour course will make it easier for you to pass the test. But it can be that hard, is only streets and addresses, but again, Im not sure. Any suggestions from any former taxi drivers? How difficult is the test? And which course should I take, the 24 hour or the 80 hour?