In addition to Microsoft Office Word and Google Docs, Zotero also has a plugin for LibreOffice if you are using an open source office suite that is not web based. You can find more out about it on Zotero's website.
One of the most useful features of Zotero is its ability to import citations directly into your Microsoft Word, LibreOffice Writer, and/or Google Drive documents. This section will show you how to use it with MS Word.
The first thing you need to do is make sure the plugin for Microsoft Office is installed.
Zotero and Microsoft Word using "linked citations" meaning that if you add or change information to a source in Zotero, you can click the "Refresh" option in the MS Word Zotero menu to repopulate the citations in your document with the new information you've added to Zotero. You can also click "Unlink Citations" if you do not want them to ever change in your document even if you change the citation information in Zotero. Doing this will require you to manually edit them going forward.
**Warning**
Zotero only works as well as your citation data allows it to. If you use incorrect citation information or don't get all the data you need to make a correct citation, Zotero will use what it has leaving your citation incorrect. It is important that as you save sources to Zotero you make sure you collect as much information about the sources as you can right away. It will save you a lot of work in the long run.