Harder topics in an calc based intro to probability class?

[torquerotates]

What are the harder topics in an calc based intro to probability class? I'm taking it in 3 weeks so I have time to prep. Here's the course layout:http://www.math.ucla.edu/ugrad/courses/math170ab/170Aoutline.shtml

 

[quasar987]

Make sure you have a good intuitive understanding of the operations on sets (union, intersection, exclusion, DeMorgan's law, etc). If that is done, the best thing you can do is start reading the text you're going to use and do problems in combinatoric. Combinatorics is very important for the rest of the class. The easiest part in my opinion comes at the end, with "Continuous random variables".