My fist day of piano course was so hard :S help plzz?

hey , I'm 15 years old boy, I started yesterday my first piano course, and It was soo hard :S! I dont know what to do now, I want to stop but I cant coz my mom paid 150$ for teaching me piano for 9 hour, and I still in my first hour, she told me to continue this month and then i can stop, but I dont know how can i continue :/ the teacher told me to study the notes and their place for the next time, and today when i tried to study it was so hard and complicatedd !! I wanted to play piano before but i dint know that its hard like this, sooo ANY ADVISE PLZ :/??