1, open Firefox browser, in the upper left corner of an orange "Firefox" button, click the button pop-up list, in the list has a "Get plugin", please click to get plug-ins. The following figure:
2, into the plug-in management page, on the left side of a download-like icon, click on it can get Firefox plug-ins, you can search the plug-in by searching, or, from the following categories recommended, or plug-in select a plug-in selection.
3, find the plugin you want to download, click to enter the details of the plug-in interface, in the interface will appear a green button "add to Firefox." Click Add, Firefox will start downloading, waiting to download.
4, download finished, will pop-up prompts you to install the window, wait three seconds, click to install immediately. To install the plug-in.
5, install complete, restart Firefox browser. Right button to find the plugin you added.