Sign up for Zotero
Your first step is to register with Zotero. Create your account: Register/set up a free zotero.org account (enables syncing and sharing)
Then install Zotero
Now install the Zotero Connector which will enable you to send any references to your Zotero account with one click.
The next step is to install Zotero Add-On to your Word to enable you to insert citations and create bibliographies on your Word document. Follow these simple steps:
Using Firefox: install Zotero Add-On
Using Chrome : install Zotero Standalone
Important: Sync your Zotero account with Zotero Add-On or Zotero Standalone: Open Zotero, click on Actions (gear icon), then select Preferences. Select the Sync tab and enter your Zotero account username and password.
This enables My Library references to be synced from all your workstations. Remember to 'sync' frequently to ensure no loss of citations.
A complete guide to understanding and using Zotero.
How do I open Zotero?
Click the Zotero icon in the bottom-right corner of your browser window to open your Zotero library.
This brings up a pane with all of your references, collections, and notes.
New Note 
Actions 
New Item 
Create New Item from Current page
New Group 
Add Item 
New Collection 
New Child attachment
by Identifier
New Search 
Sync