Download Mendely's Desktop version
https://www.mendeley.com/reference-management/reference-manager
Terms to be Familiar With:
Mendeley Desktop: Mendeley Desktop is the downloaded part of the software installed onto your computer.
Mendeley Web: This is the Mendeley website where you can access the web version of your library, edit your profile and search for papers, groups or people. You can also access Mendeley's social features.
Sync: The process of synchronizing your Mendeley data across devices.
Web Importer: The browser extension you can download to your web browser and it lets you quickly add references to your library from anywhere on the web.
Citation Plugin: A plugin you can install that allows you to create and format your citations and bibliography according to your chosen style.
Installation Instructions for Windows and Mac
https://www.mendeley.com/reference-management/reference-manager