Set up your Mendeley account on the web.
Download and install the desktop application appropriate for your computer: Microsoft Windows, Mac, or Linux.
After installation, you will need to sign in with the email address and password that you used to set up your account with Mendeley.
My Library via Mendeley Desktop
Toolbars (upper left)
Search (upper right)
Left Side Pane
My Library via Mendeley Web
The web interface is very similar to the desktop interface. Some functions are not available via the web, such as searching your collection by author name or title word.
The iPhone app provides access to most of the desktop features including folders, full text articles, tags and searchable notes.