Not enought explanation @ Installation

Just downloaded Knews + Gravity Forms Glue.
It is, unzipped, on my pc. Now, how the h#ck do I get this pluggin on my website.
Know this…I’m blond… I really don’t know a whole lot about computers.

Please help, I do need this pluggin.

Thanks!

Petra Zoet
http://www.b3coach.nl

https://wordpress.org/plugins/knews-gravity-forms-glue/