You should located whatever online resources you need in order to become familiar with the QuickSort routine.
You might start with here:
http://www.inf.fh-flensburg.de/lang/algorithmen/sortieren/quick/quicken.htm seems to be a good resource on this, and approaches the topic very well.
http://en.wikipedia.org/wiki/Quicksort , which has a lot of material, most of which we won't be using (but might be good to skim through, especially if you're looking to transfer to a four-year school)(but don't worry if it doesn't make a whole lot of senseJ)
You may also want to view any videos that are on the website, if any are available.