Plugins are tools composed of PHP scripts and it extends the functionality of WordPress. There are basically two types of Plugins. The first one is the Plugin which you upload, activate, and then interact with only through the WordPress Administration Panels. In case of second ones you install and interact with through the Administrator panels, but they also involve editing your Word Press Theme templates files. Now if we talk about installing Plugins it is relatively simple task it is one of the most fundamental importances to WordPress and is often overlooked. WordPress Plugins are available from several sources. The official source for WordPress Plugin is Official WordPress Plug-in Repository. Not all WordPress Plugins make into above repositories. Try searching the web for WordPress Plugin and keyword for type of functionality. To see the changes that a Plugin makes on your blog, you will need to clear the cache of the web browser.
Ways of installing WordPress Plug-in:
Automatically through WordPress
Manually uploading a Plug-in through WordPress
Manually Uploading a Plug-in through FTP
First: For the first and the easiest method of installing it is required that, the server should be setup in such a way that it allows modification to the Plugin directory. Once the setup is done you will be able to press on the “Add New” plugin menu option, and then simply enter the name of Plugin, the search result will them show the Plugin, clicking on that option will automatically download and install the Plugin.
Second: WordPress Plugins are usually distributed in Zip files. For downloading a Plug-in first you have to click on the down load link from appropriate website, and then after downloading store it somewhere on you computer. Now from the WordPress Plug-in menu click on “Add New”. Instead of searching for a Plugin now you can directly upload your Plugin Zip files by clicking on “Upload” button. Use the browse button to select the downloaded Plugin files, and then after that click on “Install now”. The Plug-in will be uploaded and installed and after that you can activate it.
Third: Download the latest version of the WordPress Plugin to your computer; with an FTP program which can access your site server. Upload the Plug-in files or folder to the /wp- content/Plugins/folder. In your WordPress Administration Panels, click on Plugin from the menu at the top. You should see your new Plugin listed. If not with your FTP program, check the folder to see if it is installed. If it isn’t uploaded the file again, delete the file again. To turn the WordPress Plugin on, click Activate on the far right side of the list. Check your Administration Panel or WordPress blog to see if the Plugin is working from here.
For activating and deactivating Plugin you only have to visit Installed Plugin menu. When an upgrade for a Plugin is available a red indicator in the Plugin menu will inform you about this. By selecting the “Upgrade Automatically” option the upgrading will be done automatically. For manual updating you have to re-upload the new version of the Plugin. If you are using FTP then you are advised to delete the old Plugin directory, after modification your setting and data will be retained.