If you are learning the very basics like which pedal does what, then you will feel a bit like learning to ride a bike for the first time ...... all happens automatically when you know how, but getting there can be daunting. DO NOT PANIC is my first piece of advice; keep your eyes on the road in front or in the mirror, so that you know what's going on around you and ALWAYS signal to let people (inc pedestrians) know what your intentions are.
I'm sure that you'll be in a dual control vehicle so your instructor should be able to assist you in an emergency.
Try to relax and enjoy.
Good luck.