If you have any ability to do math or write code (logical thinking) this class will be very easy. If just the word "math" makes you gasp, this probably isn't the course for you. It's hard to teach the type of thinking you need to do this class but if you already have it, its pretty simple. In fact, this was my favourite class the year I took it simply because it felt like a break from studying. Needed to buy the textbook this semester for assignment questions. I do think of the course concepts occasionally even years later but don't expect any direct usage in your future classes or career.

Redo the assignment questions and practice questions from the textbook to study and don't look at the solutions unless you absolutely need to.