Many people are afraid of what the essays are like, but they're really not that bad. All you have to do is answer the question; there's no requirement for having an introduction or conclusion. As long as you answer what the prompt asks you, you'll do fine. The main thing about essays are that you have to know what you're talking about. With multiple choice questions, even if you're not sure of the answer you can usually narrow it down to two or three options. But with essays, you have to explain and define things, which is obviously gonna be difficult if you have no clue what it's talking about. But if you pay attention in class and study, you shouldn't have any problems.