Citing References from Your Zotero Library
To connect your Zotero library to your Microsoft Word using the Zotero MS Word Plugin, first, install the plugin by clicking "Add a plugin for Word or LibreOffice" here.
Once the plugin is installed, upon opening Microsoft Word, you should see a set of tools for Zotero (under "Add-Ins" or "References" on a PC, and either floating or under the scroll icon in the File menu on a Mac). The following video provides an overview on how to use these tools to cite from your Zotero library.
Note that in the newer versions of the Zotero plugin, the default may be for Zotero to display a simple search bar for inserting citations. Clicking on the "Z" icon at the left of this search bar will allow you to switch to the "Classic View" - seeing your whole library and choosing from it as shown in the video.