As your Mendeley library grows it will be important that you correctly manage your references to make them easier to find and protect them from accidental loss or corruption.
Mendeley provides three tools to help you manage your references:
Search - will help you locate references in your library
Folders - groups references into logical groups. These may be permanent or just used temporarily for a particular task
Backup - makes a copy of your library in a single compressed file which can be stored on another device or the cloud