Infinite Scroll Plugin for Ebuy theme - not supported

So Ebuy does not support infinite scroll, and my coding knowledge is minimal. I’m looking for some guidance as to how i can manually get in there and make infinite scroll work. Ive already got the plug in activated, but i am unsure as to what to put in the content selector, nav selector, next selector, item selector, and call back fields.

thats what it looks like now. it shows 10 items, then you have to click on “older entries”. if anyone could help me set this up, id appreciate it! thanks