One of the nice things about Zotero is that it has plugins for both Microsoft Word and LibreOffice Writer. This will allow you to import citations directly into your project you are working on.
To get started doing this, open up the standalone version of Zotero. Click the "Tools" option from the Zotero toolbar at the top left of the screen.
In the "Tools" dropdown menu, select the "Add-ons" option. This will open a window that has two options: one for Enabling Libre Office and one for enabling Microsoft Word. Click the "Enable" button for the word processor you are using.
After you click "Enable" you are going to be instructed to restart Zotero for the changes to take affect. Simply click the "Restart" option presented and Zotero will restart.