New here. horrible supervisor

Horrible supervisor, what do I do?

I'm a day 4 PTF and I am trying my hardest genuinely for this job, but he is constantly cranky when I come back to the office, getting mad at me for things that he never told me to do, and asking demanding questions he knows he won't get a satisfying answer from. How do I deal with this guy? I'm new and I genuinely need time to learn the basics.