Trouble adding other lightbox script

Hi, First off – Awesome Plugin!

So I am trying to use this plugin/script: https://www.ads-software.com/plugins/simple-lightbox/

There are just so many .js and .css files, I’m not sure which ones to use. I initially used a “client.js” and “style.css” lcated in the Themes—>defualt folder.

can someone point me in the right direction??

I tried following the tutorial to add script, but it doesn’t make much sense to me in this situation since there are so many files. ERRR

Thank you in advance!!!

https://www.ads-software.com/plugins/easy-image-gallery/