What should I bring to my first swimming lesson?

I took swimming lessons when I was a little kid, and I was by far the worst in the class. It was so awful I’ve mostly avoided swimming ever since.

But I am realizing that I cannot run every day without destroying my body, so I have been talked into learning how to swim. I signed up for an adult beginner class at my gym.

What do I need to bring? Swimsuit, towel, paralyzing insecurities, and…? Will I expected to have goggles or one of those little cap things?