Virginia Tech affiliates can download EndNote for free from Software Distribution. Simply click on the link for Network Software Server and log in via 2-factor authentication. From there, you can download EndNote. Please note that downloading the software from EndNote's website will not give you access to the full version of the software.
EndNote basics for Windows
EndNote basics for Mac.
Cite While You Write Basics for Windows
Cite While You Write Basics for Mac
Sharing libraries in EndNote X8
Setting up a journals term list