1. Create a free account
All you need is an email address to sign up for a free Mendeley account- click on the "Sign up for Mendeley" link below.
2. Download Mendeley Desktop
The latest version of Mendeley desktop software is available for Windows XP/Mac OS X 10.6 or later. Once your account is created, click on the "Download Mendeley Desktop" link below.
3. Install Web Importer
This Click on the "Install Web Importer" link below, then drag the gray "Save to Mendeley" button into your Bookmarks Bar.
Below is a list of over fifty publishers and databases that include a Mendeley import tool on their website. These tools allow you to save citations to your Mendeley account directly from the publisher's website.
Image from Mendeley