Are wordpress plugins free Really Free ? How to Install them ? Are Free Plugins safe ?
There are thousands of plugins Available for free from the plugin directory of WordPress, Paid plugins usually offer a full time support staff and developers that work on maintaining the security and compatibility of plugins with the latest version of WordPress. Hence When we Pay for a Plugin it Helps the developers to Stay in the Business.
Plugins from Well Known Developers & Large Companies are Safe as they have large Customer base & Experienced Developers.
You can Install Plugins From WordPress Dashboard > Plugins > Add New