Welcome bro/sis Indeed, you are going to face great competition with your colleagues. All you have to do is perform your very very best on exams and class activities to score great grade on your freshman course so that you can join your desired department. And start reviewing the course materials. The lectures that are going to be given for you might be in hurry in short time so not to get confused it is better to have an insight before you actually attend the actual lecture. Plus, you can drop your username or message me through https://telegram.me/ask_anything_ethiopia_bot?start=p5f5c942bd03b5a6c9938df22 so that I can share you worksheets and exam questions for you to practice after reading the course materials.