You should get 4 hours of classroom time which includes weapons familiarization, legal review, shooting tips and an open Q/A. You will take a written exam. Mine was 50 questions. You need to get 70% or better to pass.
The range time is as long as it takes to go over range safety and firing. You get 48 shots on a Baker target and have to hit 80% within the lines. You shoot 12 at 20 yards, 12 at 15 yards, 12 at 10 yards, and 12 at 5 yards if memory serves.
If you are reasonably intelligent and can fire a gun decently, you will be ok.