Video on organizing and cleaning up source records in Zotero:
Video instructions on how to add citation styles in Zotero:
An active community of Zotero users has developed a variety of plugins to provide enhancements, new features, and interfaces with other programs.
To install a plugin in Zotero, download its .xpi file to your computer. Then, in Zotero, click “Tools → Add-Ons”, then drag the .xpi for the plugin onto the Add-Ons window that opens.
Here are a few we've tried: