What is SAS?

It stands for Statistical Analysis System (pronounced as sass):

It is one of the main statistical softwares, and the most well-supported statistical software with the most commercial insight among them. It is also the most popular statistical software used in pharmaceutical business (reader are referred to the official SAS website for detailed info. http://www.sas.com).

Why does everyone always talk about SAS?

SAS provides bunches of built-in procedures that contain almost all the well-developed methodologies in Statistics, Marketing, Data Mining, Social Science, and many others.  It has been widely used in Education, Government, Business (including 90% of Fortune 500). Since it is used almost everywhere, you had better be knowledgeable enough to use it, especially be capable of running statistical analysis with SAS.  GRASP THIS CHANCE TO LEARN SAS FOR YOUR FUTURE GOOD!!!

Where to access SAS on campus?

You can install SAS 9.1.3 client on campus machines. (guide) Or, if you prefer owning personal copy, you may consider purchasing SAS learning edition (There is an academic discount for full-time student).  

Reference for SAS

SAS online documentation