Firefox
There are four ways to open the Zotero pane:
To close the Zotero pane, click on the Close Window icon () in the top right corner of the Zotero pane, or repeat any of the four methods listed above.
Zotero Standalone
Simply start Zotero Standalone as you would any other program.
The Zotero pane has three panels that represent different levels of information:
To resize the Zotero pane in your browser window, click on the top edge of the pane and drag the edge to reposition the boundary.
To set preferences click on the GEAR icon: