Calculus I

Definitely watch the suggested videos, work on exercises weekly, go to classes and office hours. That was my regret, if I had studied more consistently rather than leaving most of the workload to right before the exams, understanding the concepts wouldn't have been so stressful. The teachers are also very open to helping and explaining problems; ask questions! :)

You have to be on top of this subject 24/7 or else you will just get lost and loose track of it all. Go to classes, really, that’s what helped me the most, sometimes I missed one and felt like “Now I’m going to fail this”

It’s very difficult for meeee

Yes, it is challenging, do not overestimate other people's opinions. however, it's manageable and you can't get 20 with some effort! remember, if some people were able to, why wouldn't you be?

Do the exercises, assist classes, use the office hours. Requires discipline, real effort, real ability to self criticize. João Farinha is the best one to go to.