EndNote is a citation manager product from Clairvate, similar to RefWorks or Zotero. EndNote allows you to save citations, create folders for different projects, add your own tags to citations, and attach PDFs to citations.
Once you have an EndNote Database, you can then access all your citations and PDFs from the Cloud.
Georgetown's subscription to EndNote is accessed via the Web of Science Database. For instructions click the "Accessing EndNote" tab in the left column