Also, your short essays will tend to be assigned on Wednesdays to be due the next Monday. Buy a 3-ring binder or notebook to hold it. Some are easy and accessible on your first attempt. Others are taxing and may require multiple readings. You are responsible for everything in the readings, even if not discussed.
Most students take sketchy notes.
Perhaps they think that they cannot both take notes and listen, or perhaps they do not appreciate the value of taking notes. Learn to write while you listen. Not only can it be done, it enhances your grasp of what is being said. Take as many notes as you can, without losing too much of what is said. Your notes are an invaluable resource both for understanding the course and for the final exam.