Our first day wasn't bad at all. Our team of instructors came in and introduced themselves, they showed us a PowerPoint slideshow of the class ahead of us, they explained how everything would work, and they had refreshments for us as well. They were very nice and helped put us all at ease.
First day of 2nd semester was a little different. Everyone was just as nice, but we did jump right into it after the course coordinator went over what we could expect that semester.
Don't worry, it'll be fine!!