It's easy to create a bibliography from your Zotero library.
Select the references or collections you want to include. Hold the control key and click to select multiple items. Right-click one of the selected items and choose Create Bibliography. Choose the bibliographic style you want, and select the output format: Save as RTF or HTML, copy to clipboard or print. (The RTF file format is compatible with all word processors.)
Or you can just drag and drop references from Zotero into your document! They'll turn into fully formatted citations. This works with any word processor including Google Docs.
Depending on the version of Word for Mac that you have on your computer, you might find the toolbar in a few different places.
Word for Mac 2015 has tabs, and the Zotero toolbar shows up on the "Add-Ins" tab, as shown below:
The Zotero writing and citing function for Google Docs is now supported! Google Docs support is part of the Zotero Connector for Chrome and Firefox and requires the Zotero program to function.
The Zotero Connector adds a Zotero menu to the Google Docs interface:
It also adds a toolbar button for one-click citing:
Zotero installs with only a few bibliographic styles, but many more are available to download.
To install a Zotero style:
The new style will appear in Zotero's style lists.