This article will show you How to Manage Plugins in WordPress
Step 1. Log into WordPress
Step 2. Click on Plugins then Installed Plugins
Step 3. To add a new Plugin, Click on Add New
Step 4. A list of Plugins are available here, You can find more plugins by browsing the WordPress Plugin Directory.
Step 5. You can go to Editor to edit a plugin
Although you can edit your plugins here, this is only recommended for the advanced users