A citation management system is a tool designed to save time and make your work easier.
Some popular citation management programs:
Zotero (create an account with your The Chicago School email and get unlimited storage!)
These citation managers provide the same basic features -- they allow you to save citations, organize them into folders or libraries, and generate bibliographies and citations as you write.
To decide which tool is right for you, review the comparison below and talk with people in your department about the tools they use and why.
Once you choose a tool, know that you can always change your mind; sources can usually be transferred between tools. (Please note that attachments don't always transfer.)